A.1.0mol/L | B.2.0mol/L | C.0.50mol/L | D.0.025mol/L |
2.33g |
233g/mol |
1 |
1 |
x |
0.01mol |
0.02mol |
0.02L |
A.铁和稀硫酸反应:2Fe+6H+=2Fe3++3H2↑ |
B.NaHCO3溶液与NaOH溶液反应:OH-+HCO3-=CO32-+H2O |
C.钠和冷水反应Na+2H2O=Na++2OH-+H2↑ |
D.高氯酸和NaOH溶液反应HClO4+OH-=ClO4-+H2O |
A.往碳酸氢钠溶液中加入少量氢氧化钠溶液:HCO3-+OH-=CO2↑+H2O | ||
B.向漂白粉溶液中通入少量SO2:Ca2++2ClO-+H2O+SO2=CaSO3↓+2HClO | ||
C.将少量氨气通入硫酸溶液:NH3+H+=NH4+ | ||
D.向NaHSO4溶液中加入Ba(OH)2溶液至中性:Ba2++OH-+H++SO
|
A.94.1% | B.92.9% | C.86.3% | D.83.2% |
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