Question

. Complete the equations.
1. 2Mg + O, → ....
2. C+0, →
3. SO, + H,0 → ......
4. 2Na + 2H, O → 2NaOH
5. Mg + H SO,
6. Zn + FeSO, → .....
+..
..... +H,
4
. +.​

Answer 1

1. $\sf{2Mg + O_2 \rightarrow 2MgO}$

Magnesium ribbon burns with oxygen to produce magnesium oxide. Given reaction is an example of Combination reaction.

$\rule{100}2$

2. $\sf{C+O_2 \rightarrow CO_2}$

Carbon react with oxygen to produce Carbon-dioxide. Given reaction is Combination Reaction.

$\rule{100}2$

3. $\sf{SO_2+H_2O \rightarrow H_2SO_3}$

Sulfur dioxide react with water to produce sulfurous acid. The above reaction is an example of Combination reaction. (as two or more reactants react to produce single reactant.)

$\rule{100}2$

4. $\sf{2Na+2H_2O \rightarrow 2NaOH+H_2}$

More reactive element displaces less reactive element from it's salt solution. The reaction is Displacement reaction.

$\rule{100}2$

5. $\sf{Mg+H_2SO_4 \rightarrow MgSO_4+H_2}$

Given reaction is an example of Displacement Reaction.

$\rule{100}2$

6. $\sf{Zn+FeSO_4 \rightarrow ZnSO_4+Fe}$

Zinc displaces iron from Iron sulphate in it's aqueous solution and gives Zinc sulphate and Iron metal. The reaction is Displacement reaction.