Question

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? 1 2 3 4

Explanation:

Step1: Write un - balanced equation

$Pb(NO_3)_2(aq)+Li_2SO_4(aq)
ightarrow PbSO_4(s)+LiNO_3(aq)$

Step2: Balance nitrate and lithium

On the left - hand side, there are 2 nitrate ions in $Pb(NO_3)_2$ and 2 lithium ions in $Li_2SO_4$. To balance the nitrate and lithium on the right - hand side, we need 2 moles of $LiNO_3$. So the balanced equation is $Pb(NO_3)_2(aq)+Li_2SO_4(aq)
ightarrow PbSO_4(s)+2LiNO_3(aq)$.

Answer:

B. 2