Question

When balanced, which equations would have the coefficient 3 in front of the any of the reactants? Check all that apply.

A. AgBr + GaPO4 → Ag3PO4 +GaBr3
B. H2SO4 + B(OH)3 → B2(SO4)3 + H2O
C. Fe + AgNO3 → Fe(NO3)2 + Ag
D. C2H4O2 + O2 → CO2 +H2O

Answer 1

The answers are A and B, I just took the test.

Answer 2

Equation A and Equation B will have the coefficient 3 in front of AgBr and H₂SO₄ respectively.

Step-by-step explanation:

Equation A:

Unbalanced: AgBr + GaPO₄ → Ag₃PO4 + GaBr₃

Balanced: 3 AgBr + GaPO₄ → Ag₃PO4 + GaBr₃

Equation B:

Unbalanced: H₂SO₄ + B(OH)₃ → B₂(SO₄)₃ + H₂O

Balanced: 3 H₂SO₄ + 2 B(OH)₃ → B₂(SO₄)₃ + 6 H₂O

Equation C:

Unbalanced: Fe + AgNO₃ → Fe(NO₃)₂ + Ag

Balanced: Fe + 2 AgNO₃ → Fe(NO₃)₂ + 2 Ag

Equation D:

Unbalanced: C₂H₄O₂ + O₂ → CO₂ + H₂O

Balanced: C₂H₄O₂ + 2 O₂ → 2 CO₂ + 2 H₂O