问题
选择题
在100 mL的溶液中溶有5.85 g NaCl和9.5 g MgCl2,此溶液中Cl-的物质的量浓度为( )
A.0.2 mol·L-1
B.0.3 mol·L-1
C.3 mol·L-1
D.2 mol·L-1
答案
答案:C
5.85 g NaCl中;9.5 g MgCl2中
,即混合溶液中
,所以此溶液中Cl-的物质的量浓度
在100 mL的溶液中溶有5.85 g NaCl和9.5 g MgCl2,此溶液中Cl-的物质的量浓度为( )
A.0.2 mol·L-1
B.0.3 mol·L-1
C.3 mol·L-1
D.2 mol·L-1
答案:C
5.85 g NaCl中;9.5 g MgCl2中
,即混合溶液中
,所以此溶液中Cl-的物质的量浓度
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