Question

判断这三句话是否正确.

Answer 1

错.因为CH3OH在标况下是液体.

对.2Na2O2 + 2H2O = 4NaOH + O2 -----2e-

2 2

1 n(e-) = 1mol 所以2对.

3.错.PH=1 C(H+)=0.1mol n(H+)=CV=0.1*1=0.1mol所以溶液中含有H+为0.1NA