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H3AsO4 + Zn = AsH3 + Zn (+2 charge)

2007-10-08 17:31:44 · 1 answers · asked by moviefan254 1 in Science & Mathematics Chemistry

1 answers

Please try to solve similar problems by starting from half reactions:
Zn ==> Zn(2+) + 2e-
H3AsO4 + 8e- + 8H+ ==> AsH3 + 4H2O
Add 4 times of the first equation to the second:
H3AsO4 + 4Zn + 8H+ ==> AsH3 + 4Zn(2+) + 4H2O

2007-10-08 18:13:41 · answer #1 · answered by Hahaha 7 · 0 0

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