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116问答网 > 1774年,瑞典化学家舍勒发现软锰矿石(主要成分是Mno2)与浓盐酸混合加热能制取Cl2；

1774年,瑞典化学家舍勒发现软锰矿石(主要成分是Mno2)与浓盐酸混合加热能制取Cl2；

2025-03-15 16:30:56

推荐回答（1个）

回答1：

MnO2的质量=23.2*75%=17.4g
MnO2的物质的量n=m/M=17.4/87=0.2mol

MnO2+4HCl（浓）═MnCl2+2H2O+Cl2↑
1 4 1
0.2mol n(HCl) n(Cl2)

1.n(Cl2)=0.2mol
Cl2的体积V=n*Vm=0.2*22.4=4.48L
2.n(HCl)=0.8mol
浓盐酸的体积V=n/c=0.8/12=0.667L=667mL

答：（1）生成的Cl2的体积是4.48L
（2）参加反应的浓盐酸的体积是667mL

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