this formula equation is unbalanced. pb(no₃)₂(aq) + li₂so₄(aq) → pbso₄(s) + lino₃(aq) which coefficient…
this formula equation is unbalanced. pb(no₃)₂(aq) + li₂so₄(aq) → pbso₄(s) + lino₃(aq) which coefficient should appear in front of lino₃ in the balanced equation?\n1\n2\n3\n4
Answer
Answer:
B. 2
Explanation:
Step1: Count atoms on both sides
On the left - hand side:
- For lead ($Pb$): 1 atom in $Pb(NO_3)_2$.
- For nitrogen ($N$): 2 atoms in $Pb(NO_3)_2$.
- For oxygen ($O$): 6 from $Pb(NO_3)_2$ and 4 from $Li_2SO_4$, total 10 oxygen atoms.
- For lithium ($Li$): 2 atoms in $Li_2SO_4$.
- For sulfur ($S$): 1 atom in $Li_2SO_4$. On the right - hand side:
- For lead ($Pb$): 1 atom in $PbSO_4$.
- For nitrogen ($N$): 1 atom in $LiNO_3$.
- For oxygen ($O$): 4 in $PbSO_4$ and 3 in $LiNO_3$.
- For lithium ($Li$): 1 atom in $LiNO_3$.
- For sulfur ($S$): 1 atom in $PbSO_4$.
Step2: Balance the equation
The balanced chemical equation is $Pb(NO_3)_2(aq)+Li_2SO_4(aq)\rightarrow PbSO_4(s) + 2LiNO_3(aq)$. We need 2 moles of $LiNO_3$ to balance the lithium and nitrogen atoms. So the coefficient of $LiNO_3$ is 2.