Question

Prepare aqueous solution of varius solid salts available in laboratory observe what happens when aaaqueous solution of sodium hydroxide is added in these prepare chart of double displacement reactions based on the observation

Answer 1

Salts and water is produce

NaOH + HCl → NaCl + H2O

refer to the attachment

Answer 2

NaOH is a strong base there it usually gives double displacement neutralization reaction with acidic compounds. These reactions form salt and water mainly.

For example, reaction of HCl with NaOH forms NaCl and water.

$NaOH(s) + HCl(aq) \rightarrow NaCl(aq) + H_2O$

In the above, the solid NaOH had to first dissolve - which released heat - and then it neutralized the acid, which released even more heat.