Question

Question was provided via image upload.

Explanation:

Step1: Balance Q2: Match Al atoms

$$3\text{Ca(OH)}_2 + \text{Al}_2(\text{SO}_4)_3 ightarrow 2\text{Al(OH)}_3 + \text{Ca(SO}_4)$$

Step2: Balance Q2: Match Ca/SO₄ atoms

$$3\text{Ca(OH)}_2 + \text{Al}_2(\text{SO}_4)_3 ightarrow 2\text{Al(OH)}_3 + 3\text{Ca(SO}_4)$$

Step3: Balance Q3: Match Na atoms

$$2\text{NaOH} + \text{H}_2(\text{SO}_4) ightarrow \text{Na}_2(\text{SO}_4) + \text{H}_2\text{O}$$

Step4: Balance Q3: Match H/O atoms

$$2\text{NaOH} + \text{H}_2(\text{SO}_4) ightarrow \text{Na}_2(\text{SO}_4) + 2\text{H}_2\text{O}$$

Step5: Balance Q4: Match Pb/CrO₄ atoms

$$\text{Pb(NO}_3)_2 + \text{K}_2(\text{CrO}_4) ightarrow \text{Pb(CrO}_4) + 2\text{K(NO}_3)$$

Step6: Balance Q5: Match Al atoms

$$2\text{Al(OH)}_3 ightarrow \text{Al}_2\text{O}_3 + \text{H}_2\text{O}$$

Step7: Balance Q5: Match H/O atoms

$$2\text{Al(OH)}_3 ightarrow \text{Al}_2\text{O}_3 + 3\text{H}_2\text{O}$$

Step8: Balance Q6: Match S/Pb atoms

$$\text{PbSO}_3 + \text{O}_2 ightarrow \text{PbSO}_4$$

Step9: Balance Q6: Match O atoms

$$2\text{PbSO}_3 + \text{O}_2 ightarrow 2\text{PbSO}_4$$

Answer:

1. $3\text{Ca(OH)}_2 + \text{Al}_2(\text{SO}_4)_3

ightarrow 2\text{Al(OH)}_3 + 3\text{Ca(SO}_4)$

1. $2\text{NaOH} + \text{H}_2(\text{SO}_4)

ightarrow \text{Na}_2(\text{SO}_4) + 2\text{H}_2\text{O}$

1. $\text{Pb(NO}_3)_2 + \text{K}_2(\text{CrO}_4)

ightarrow \text{Pb(CrO}_4) + 2\text{K(NO}_3)$

1. $2\text{Al(OH)}_3

ightarrow \text{Al}_2\text{O}_3 + 3\text{H}_2\text{O}$

1. $2\text{PbSO}_3 + \text{O}_2

ightarrow 2\text{PbSO}_4$