湖南省永州市江华县2021届中考一模化学试卷
※题型：单选题※知识点：单选题※试题难度：容易<br>下列变化属于物理变化的是( )<br>A.食盐溶于水 B.石蕊试液遇酸变红<br>C.钢铁生锈 D.粮食酿酒<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/d9509d5e1ccc4d6da131d003820c7998/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/16fbbb37e8ac4f819b628167a78278d1/3F2D906FEEB2B06EA2F2A8B28B8F51B4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图所示的实验基本操作中,正确的是( )<br>A.倾倒液体<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/22/5061EC4DCB7A6775D064AF10F0D18E35.png"><br>B.滴加液体<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/22/1B16357F95765DBA54105D27B7B01C63.png"><br>C.加热液体<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/22/50DD310820BA3E10C753055CEB5B9F61.png"><br>D.塞进橡皮塞<img src="https://picture2.zhihuicn.com/testImage/2/2020/12/22/ADDE05F711DFD071A7D6C61F4EAFAD44.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/6d43dd82e1944fd7ab8212f46177b064/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/62b648fb328d4b1c80cf9df62ec7253e/DC6557B2F2E57C9A61A29E2FC7D46995.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列不属于化石燃料的是( )<br>A.煤 B.石油 C.氢气 D.天然气<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/1d71cfa1b4be4dabbe060b02ac335872/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>“依稀记得校园里的那株桂花树,一到花开时节,每个角落都能闻到它的香气”。每个角落都能闻到花香的原因是( )<br>A.分子的质量很小 B.分子间有间隔<br>C.分子由原子构成 D.分子在不断运动<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/ecc78da2c4164da6af8fd212c21df835/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/3a1a4c3bc6b34f5aabbf1b9bf7c2a265/CD720B9894C1785D57EB717D0EE301A0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>关于如图所示的电解水实验,下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/4F179388B8F2DFE41287DB36129EDF3F.png"><br>A.试管1中是氧气<br>B.得出水由氢气和氧气组成的结论<br>C.试管1和试管2中气体的质量比为2:1<br>D.用带火星的木条检验试管2中的气体能复燃<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f7b4e55b4bb34d55bd303f4f5dd54a25/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/e9ecc2603daa4d26bd2314e589009774/124D842BA16B9F71B3BE02D06063BD2B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列化学用语书写错误的是( )<br>A.2个钾原子:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/53E0F2F01B4E59A82DD9AA13A6AE9775.png"><br>B.3个氧分子:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/F22820D3546BFCC49201025B07B3E804.png"><br>C.氧化铁中的铁元素的化合价为+3价:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/19E6657E1B8CD420ABB3D879B59683D9.png"><br>D.钙离子:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/F735C17568E245ED1CA1D2846E71121F.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/639d88a248864566a8a5ef4872f28228/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/369966bd47f64ff5976575ad7abcbb40/356845B912A41BE7DCCCDD004D22F427.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列物质溶于水能形成溶液的是( )<br>A.花生油 B.高锰酸钾 C.淀粉 D.奶粉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/ceec8cb459be491484792db15ded94f9/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/40257061cfd84d70bd857a9d2f1934e1/89C49B554181144A4B59B8B317153A12.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列关于物质用途的描述中,不正确的是( )<br>A.稀盐酸可用于除铁锈 B.铜用于制作导线<br>C.熟石灰可以改良酸性土壤 D.烧碱可以制作糕点<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/5937df98f7de48869fa6b8fd00e59989/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/09bbd3f082554862b8dfb08f9ba2b7b8/4A0444C59E19E61510BBA7D9DB333ECD.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>乙烯(<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/67B6F15CA8F50C3E432514CB3244B96B.png"><br>)燃料电池中,燃烧前后分子种类变化的微观示意图如图。下列说法不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/C03DCFEBFA422190DFD936222D932717.png"><br>A.甲中碳、氢元素的质量比为6:1<br>B.两种生成物均为氧化物<br>C.28g甲完全燃烧至少需32g乙<br>D.生成的丙与丁的分子个数比为1:1<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/1745c3e0fc244db9a65908c8ea00bf38/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ea39839bb7e94da087e3d4d15e21b805/4476C753A78C7C0CD77811082F7002C2.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>温度不变,对100mL氯化钠饱和溶液进行如图所示实验。下列结论不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/7/AB7CE9EA94F54E5ED161396522D70480.png"><br>A.实验一后,甲和乙中溶质质量分数相等<br>B.实验二后,乙溶液溶质质量分数增大<br>C.实验二后,甲溶液变为不饱和溶液<br>D.实验二后,甲和乙溶液中溶质质量相等<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9c8585a2501046fda93b5c9695597861/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列实验对应的现象或化学方程式不正确的是( )<br>A.将红热的木炭伸入盛满氧气的集气瓶中:木炭剧烈燃烧,发白光,放热<br>B.用氢氧化钙处理含硫酸的废水:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/F9B55B42DB3D9256784513B05C25DA61.png"><br>C.将稀硫酸滴入盛有锌粒的试管中:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/15E4DAA17AFF510776EA0ACA7BC67208.png"><br>D.将稀盐酸滴入盛有氧化铁粉末的试管中:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/76F79E9223FC9459DB9015760F0046A6.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/22f280e1a19f40edb8c858b9c61fae90/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/fa51430846ee48e897966ee619a7ea9c/9EF54A3A6122E12705FC9A721E0B6765.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列物质中不属于碱的是( )<br>A.火碱 B.纯碱 C.消石灰 D.氨水<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/21ce022f029449ed966373ec74d252ff/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/81c2cfda3f614d4886b29c85e6e4425f/0175BF2AE06171487B1BD815D0988DE7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列物质存放在烧杯中一段时间后,质量变大的是( )<br>A.烧碱 B.浓盐酸 C.乙醇 D.大理石<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/a1796ac5a91d4c91a8546fa17570fc75/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/551482a86bc8495e9690a3e7229954df/44A7C2988221B155E721CF82E4B7D27A.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为四种物质间的反应关系,两圆相交部分(A、B、C、D)表示主要反应现象,其中描述不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/2584E73A44A115D9C333CC9FED0AAB32.png"><br>A.溶液变蓝 B.溶液变红<br>C.产生白色沉淀 D.有气泡产生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/89a3e6a7f3dc4f82afab46d8a93a37c4/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/f59ee95447cf4b3e980c0805af81f62b/87FEC4D77B0B3B67150893C3924680B9.png"><br><br>※题型：填空题※知识点：填空题※试题难度：容易<br>用化学用语填空。<br>1.碳酸 ;<br>2.苛性钠 ;3.小苏打;4.硫酸钡。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/6c3e9dd7386d4766b19fbc46ec8797a1/616594B18945228AB1455C6ACE5DA3BE.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/7e8e06f609d84308ac3ab21cd90a68fa/49D57331C77736761FD9E905328C9964.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>为防止病毒感染,学校为各个教室配发了消毒液,图甲为<br>消毒液:其有效成分为次氯酸(<br>HClO<br>),图乙为<br>75%<br>的医用酒精。<br>1.次氯酸属于 (填“氧化物”、“酸”或“碱”);<br>2.次氯酸很不稳定,只存在于水溶液中。在光照的条件下,发生反应:<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/2288D76B45716A9C5BCA315673C13AFF.png"><br>,该反应的基本反应类型为;3.75%的医用酒精中,溶剂是 (写化学式);用医用酒精消毒时,最好选择擦拭局部区域的方式,喷洒酒精消毒遇明火容易引起火灾,其原因是(填写正确选项的编号)。A.“喷洒”降低了酒精的着火点B.“喷洒”使酒精和空气均匀混合C.“喷洒”使酒精分子的体积变小了<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/6B04AFD0C4FBCD904B2893024E0EAF6E.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/65484b5a3a2c43669266c934bfdd9cb4/E2DC12A550CEF5254EC3A92B902EFD06.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/08746f6091b34852ada57e28dbfaa124/71F6FB3E1EA14C508FAC263905D36A49.png"><br><br>※题型：问答题※知识点：问答题※试题难度：中等<br>阅读下面科普短文。<br>因新冠疫情,全球曾出现了“口罩荒”,其中熔喷<br>布更是<br>成为制约口罩产能增长的关键因素。“熔喷布”俗称口罩的“心脏”,是生产医用外科口罩与<br>N95<br>口罩的重要原料。熔喷<br>布由于<br>使用易加工、性能好、耐药性能优异的聚丙烯<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/B9B09216CF07E45D5FCCE5C33EADD99F.png"><br>作为原料,所以空隙率更高,比表面积更多、过滤效率更好、绝缘性能也十分优异。口罩合不合格很大程度上取决于熔喷<br>布是否<br>合格,质量检测是熔喷布从采购、生产、销售到使用的重要环节。<br>检测<br>一<br>熔喷布的内在质量指标应符合如图:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/3F92B132E7A5FF2519110D2A2DD0C4A5.png"><br>检测二:熔喷布的微生物指标应符合下表:<br><tbody><br>项目<br>要求<br>细菌菌落总数<br>/<br>(<br>CFU/g<br>)≤<br>200<br>真菌菌落总数<br>/<br>(<br>CFU/g<br>)≤<br>100<br>大肠菌群<br>不得检出<br>致病性化脓菌<br>不得检出<br></tbody><br>熔喷布作为医疗卫生用布,主要用来制造医用防护服、手术衣、医用口罩、尿片、消毒包布、卫生巾等产品。<br>依据文章内容回答下列问题。<br>1.聚丙烯<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/B9B09216CF07E45D5FCCE5C33EADD99F.png"><br>由种元素组成;<br>2.依据图可知,熔喷布的质量与透气性的关系是;3.熔喷布的细菌菌落总数需控制在 (CFU/g)以下。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9fbf41d26bb747ea8235cf8daa2dda5e/B5DFAEE7639CA8A3F1D30F4562860B59.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/25d340b5763f4f8a84748a9cc5c8a64d/D1439A49245755F5A9B57ECCF311F97D.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>根据如图,回答问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/C1CDD8B7B1D0E36D7D1D8C322CF45304.png"><br>1.实验①中,烧杯内盛放的水是 (填“冷水”或“热水”);<br>2.在图甲整个实验中,观察到的现象是;3.对比图甲中的实验②和实验③,得出的结论是;4.图乙中A装置内发生反应的化学方程式为;5.收集较纯净的氧气可选择的图乙中的装置是 。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/e524a4296dbb48358ee9fd7d8865f8b3/F373DD46FFCB4FDCBD23C048541E3F75.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/4bb986fdd8d94b88a9500d8671db0731/5AADB07E59C7E13E7757E218868A4C19.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>漂白粉<br>[<br>有效成分为<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/21ACAD4613323BBE1ABD132CF65DE271.png"><br>]<br>可用于泳池消毒。工业制取漂白粉的主要转化过程如图:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/09B782D93DEC5A4128F5F07AC4C6D2B5.png"><br>1.②中生成的<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/640FA9CE9706385F659B022DD985CD4B.png"><br>俗称为(填序号)。A.生石灰B.熟石灰C.消石灰D.石灰石2.③中反应的化学方程式为<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/724A25F9CC4B2A7060380AD2A3772CDD.png"><br>,X的化学式为。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/2fd9a043da574647b7999ba2ffa5465d/09435FA83B7E6786E38520AFA77AB1B3.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/49a5eadf36444bfba6e5e20dd599c32a/EC8E37EB7ECA9C1839DD9223C3940E34.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较难<br>如图<br>Ⅰ<br>是甲、乙、丙三种固体物质(均不含结晶水)的溶解度曲线。回答下列问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/0E99ED6F5E9C92764A422B85BCE098D0.png"><br>1.<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/FCCD9596601883BB3311EAC823C6623F.png"><br>℃时,甲、乙、丙三种物质的溶解度由大到小的顺序是_____________。<br>2.<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/B6424CA556CE40A1DEAB00BCB91BF72C.png"><br>点表示<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/BFD72B8D015C6E67E1C3E17DE297996F.png"><br>℃时,甲、丙两种物质的饱和溶液中,溶质与溶剂的质量比相等,均为_____________。<br>3.<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/BFD72B8D015C6E67E1C3E17DE297996F.png"><br>℃时,取甲、乙两种固体各15<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/8D2E49B3ABD2B42F9528623241021160.png"><br>分别加入40<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/8D2E49B3ABD2B42F9528623241021160.png"><br>水中充分溶解,实验现象如图Ⅱ所示,则烧杯a中溶解的物质是_____________(填“甲”或“乙”),所得溶液的质量为_____________<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/8D2E49B3ABD2B42F9528623241021160.png"><br>。<br>4.当甲中含有少量的乙和丙(甲、乙、丙相互间均不发生化学反应)时,可采用_____________(填“降温”或“蒸发”)结晶的方法提纯甲物质。<br>5.下列说法正确的是_____________(填序号)。A.将甲物质的溶液由<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃降温到<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/BFD72B8D015C6E67E1C3E17DE297996F.png"><br>℃,一定有晶体析出B.将甲物质的饱和溶液由<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/BFD72B8D015C6E67E1C3E17DE297996F.png"><br>℃升温至<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃时,其溶质质量分数增大C.将<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃时三种物质的饱和溶液恒温蒸发等质量的水,析出溶质的质量:甲>乙>丙D.将<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃时三种物质的饱和溶液降温至<img src="https://picture2.zhihuicn.com/testImage/2/2021/1/4/BFD72B8D015C6E67E1C3E17DE297996F.png"><br>℃,所得溶液的溶质质量分数:乙>甲=丙<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/2080fd6f91df411d8dbf9604ccd872d7/DABDAC46B500867875CE13554432DB79.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/8898a246906b4ba5a720a4350b5cf69b/C8A1AAD3D27D50BECBA76DE58707586E.png"><br><br>※题型：问答题※知识点：问答题※试题难度：中等<br>根据如图所示回答问题:<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/8912096278FB2213677908BB208087F6.png"><br>1.如图甲所示,实验室稀释浓硫酸时,①处的试剂是;2.甲中玻璃棒的作用是;3.配制一定溶质质量分数的氯化钠溶液的操作过程如图乙所示,正确的操作顺序是(填序号);A.①②③④B.②①③④C.②①④③4.在配制溶液中,小明量取水仰视读数,则所配制的溶液溶质质量分数将(“偏大”、“偏小”或“不变”)。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/dfe5b50984484cf8bcc6d93c87c93549/823D7A65688B87D359C9416A87C7E6C9.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/4b3a748cee49420a899b4c62a760ef78/F32B4564D791127DC17C8DC65350E4E8.png"><br><br>※题型：填空题※知识点：填空题※试题难度：中等<br>亮亮同学用如图装置进行实验。向充满二氧化碳的两个软质塑料瓶中分别注入等体积的饱和氢氧化钠溶液、水,立即拧紧瓶塞,振荡,观察现象。<br>(<br>)该实验可以证明二氧化碳与氢氧化钠发生反应,二氧化碳与氢氧化钠反应的化学方程式为<br>;<br>(<br>)小<br>明观察<br>到<br>A<br>瓶比<br>B<br>瓶变瘪得<br>更明显,原因是<br>;<br>(<br>)氢氧化钠应<br>保存。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/5/27/A87235BA64FF52E6E2125FD9B5AFAB8D.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/dd6bfb908fba454d930015be92981da1/5A742C750FC53295677CE729831A5261.png"><br>解析<br>略<br>※题型：问答题※知识点：问答题※试题难度：中等<br>补全实验报告。<br><tbody><br>装置及操作<br>现象<br>解释或结论<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/12/11/41C556AAEFC54761AA8A6664EA2F1A79.png"><br>(1)<br>向<br>中滴加<br>_<br>__________<br>溶液<br>铁片上附着<br>红色固体,溶液颜色变浅<br>Fe<br>的金属活动性比<br>Cu<br>的强<br>(2)<br>向<br>中滴加盐酸<br>固体减少,得到黄色溶液<br>化学方程式:<br>_<br>__________<br>_<br>__________<br>_<br>__________<br>(3)<br>向<br>中滴加足量盐酸<br>_<br>__________<br>_<br>__________<br>_<br>__________<br><img src="https://picture2.zhihuicn.com/testImage/2/2020/12/11/899E87B27F1236109AC87103F2D31DB2.png"><br>能与盐酸反应<br></tbody><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/3728e0edb920496092235a03e4f6720f/8D309169D2190DFEA15DC1B95A582146.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/6c3e74ce043e4afa9191110a5d3bf389/26B1948F7CD7ECF170A61DA775F2C907.png"><br><br>※题型：计算题※知识点：计算题※试题难度：中等<br>73g<br>质量分数为<br>10%<br>的盐酸与一定量的碳酸钠固体恰好完全反应。求:<br>1.参加反应的碳酸钠的质量;2.生成的二氧化碳的质量;3.恰好完全反应时所得的溶液的溶质质量分数。(保留到0.1%)<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/1a130b22104640cba7a3463d9a1a81d5/BF228C794F69BA700E5146297A8716C5.png"><br>解析<br>略<br>
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