Practice Quiz: Module 5 Unit 1

When the reaction shown is correctly balanced, the coefficients are:

____ HBr  +  ____ Ca(OH)2  → ____ CaBr2  + ____ H2O

Which of the following equations is not balanced?

A) C7H16 + O2  →  7 CO2  +  8 H2O
B) 3 AgNO3 + (NH4)3PO4  →  Ag3PO4  +  3 NH4NO3
C) 2 Al2O3 → 4 Al  +  3 O2
D) 4 Fe3O4 + O2  →  6 Fe2O3
E) K2CrO4 + Pb(NO3)2  →  2 KNO3  +  PbCrO4

Consider the reaction shown and identify the statement that is not true.

Δ

CaCO3 (s)→CaO (s)  +  CO2 (g)