a) When the following skeletal equation is balanced under basic conditions, what

Question

a)

When the following skeletal equation is balanced under basic conditions, what are the coefficients of the species shown?

__Si + __ MnO2 ---> ___  Mn(OH)2 + ___ SiO32-

Water appears in the balanced equation as a  (reactant, product, neither) with a coefficient of ____ . (Enter 0 for neither.)

Which species is the oxidizing agent? ______?

b)

When the following skeletal equation is balanced under basic conditions, what are the coefficients of the species shown?

___Cl2 + ___Cu___Cl- + ____Cu(OH)2

Water appears in the balanced equation as a  (reactant, product, neither) with a coefficient of . (Enter 0 for neither.)

Which species is the reducing agent? _____

Explanation / Answer

a)Si + 3MnO2+3H2O ---> 3 Mn(OH)2 +SiO3

Water appears in the balanced equation as a  (reactant, product, neither) with a coefficient of 3.

MnO2 species is the oxidizing agent. An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction.

b) Cl2 +Cu+2H2O----->2HCl +Cu(OH)2

Water appears in the balanced equation as a  (reactant, product, neither) with a coefficient of 2.

Cu(OH)2 species is the reducing agent. A reducing agent, or reductant, loses electrons and is oxidized in a chemical reaction.

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