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Solution of the problem 631 of the collection of genera
631. Complete the reaction equations, write the equations in ion-molecular form:
A) K2S + K2MnO4 + H2O → S +
B) NO2 + KMnO4 + H2O → KNO3 +
C) KI + K2Cr2O7 + H2SO4 → I2 +
D) Ni (OH) 2 + NaClO + H2O → Ni (OH) 3+
E) Zn + H3AsO3 + H2SO4 → AsH3 +
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