ОВР1)Si+KOH--K4SiO4+H22)KMnO4+H2O+H2SO4--O2+MnSO4+K2SO4+H2O

Question

ОВР
1)Si+KOH--K4SiO4+H2

2)KMnO4+H2O+H2SO4--O2+MnSO4+K2SO4+H2O

Answer 1

1)   Si+4KOH->K4SiO4+2H2
позже2

Comments

ЕСТЬ!!!)))

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2KMnO4+H2O+2H2SO4->O2+2MnSO4+K2SO4+3H2O