A:H2S+H2SO4(浓)=S↓+SO2↓+2H2O:6e-
B:3Cl2+6KOH5KCl+KClO3+3H2O:5e-
C:2Na2O2+2H2O=4NaOH+O2↑:2e-
D:2H2S+SO2=3S+2H2O:4e-
形近字组词
挤____ 蜗____
济____ 锅____
贴____ 设____
沾____ 没____
After working all day,he was so tired that he was in no______to go to the party with us.