| ||
1000ρw |
M |
1000×1.19×36.5% |
36.5 |
| ||
8.7g |
87g/mol |
0.9mol×2 |
18mol/L |
| ||
A.3:2:1:4 | B.1:1:1:1 | C.1:2:1:2 | D.2:2:1:1 |
A.+2价 | B.+3价 | C.+4价 | D.+5价 |
A.d曲线代表溶液中Br-变化情况 |
B.原溶液中FeI2的物质的量为2mol |
C.原溶液中n(Fe2+):n(Br-)=2:3 |
D.当通入2molCl2时,溶液中离子反应为:2Fe2++2I-+2Cl2═2Fe3++I2+4Cl- |
| ||
A.+2 | B.+3 | C.+4 | D.+6 |
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