n=cV=0.1201×0.1=0.01201mol;
M=m/n=268g/mol;
设化学式为Na2SO4·xH2O;
摩尔质量=46+96+18x=268;
x=7;
化学式为Na2SO4·7H2O；
硫酸钠晶体在空气中久置会失去部分或全部结晶水,现有硫酸钠晶体3.220g...
n=cV=0.1201×0.1=0.01201mol;
M=m/n=268g/mol;
设化学式为Na2SO4·xH2O;
摩尔质量=46+96+18x=268;
x=7;
化学式为Na2SO4·7H2O；