CHEM 1117
Balancing Equation Practice Problems/Answers
__C__ 1) When the equation, ___N2 + ___H2 → ___NH3 is balanced, the coefficient of hydrogen is
A) 1
B) 2
C) 3
D) 4
E) none of the above
__A__ 2) What are the coefficients for the following reaction when it is properly balanced?
___HCl + ___Mg → ___MgCl2 + ___ H2
A) 2, 1, 1, 1
B) 2, 1, 2, 2
C) 1, 2, 1/2, 1
E) none of the above
D) 1, 1, 1, 2
__D__ 3) What are the coefficients for the following reaction when it is properly balanced?
___O2 + ___CH4 → ___CO2 + ___H2O
A) 2, 1, 3, 1
B) 2, 3, 2, 2
C) 1, 3, 2, 1
E) none of the above
D) 2, 1, 1, 2
__C__ 4) What are the coefficients for the following reaction when it is properly balanced?
___Na3PO4 + ___Ba(NO3)2 → ___NaNO3 + ___Ba3(PO4)2
A) 2, 1, 1, 3
B) 2, 3, 1, 6
C) 2, 3, 6, 1
D) 6, 1, 3, 2
E) none of the above
__D__ 5) What are the coefficients for the following reaction when it is properly balanced?
___nitric acid + ___sodium hydroxide → ___sodium nitrate + ___water
A) 2, 1, 1, 1
B) 2, 3, 2, 2
C) 5, 2, 2, 1
D) 1, 1, 1, 1
E) none of the above
__B__ 6) What are the coefficients for the following reaction when it is properly balanced?
___potassium iodide + ___lead (II) acetate → ___lead (II) iodide +___potassium acetate
A) 2, 1, 1, 1
B) 2, 1, 1, 2
C) 3, 2, 2, 1
D) 1, 1, 2, 2
E) none of the above
__B__ 7) What are the coefficients for the following reaction when it is properly balanced?
___nitrogen monoxide + ___carbon monoxide → ___nitrogen +___carbon dioxide
A) 2, 1, 1, 2
B) 2, 2, 1, 2
C) 2, 2, 2, 1
D) 1, 1, 2, 2
E) none of the above
Balance the following chemical equations.
__2__ C4H10(g) +
__13__ O2(g)
⇒
__8__ CO2(g)
__1__ H2(g)
__1__ O2(g)
⇒
__1__ H2O2(l)
+
+
__1__ H2SO4(aq) +
__1__ Ca(OH)2(aq)
⇒
__2__ Li(s)
+
__1__ Cl2(g)
⇒
__2__ LiCl(s)
__2__ Rb(s)
+
__2__ H2O(l)
⇒
__2__ RbOH(aq)
__10__ H2O(g)
__1__ CaSO4(aq)
+
+
__2__ H2O(l)
__1__ H2(g)