Question

Give the balanced chemical equation when aluminium reacts with concentrated caustic potash solution ​

Answer 1

Answer:

The chemical equation for the reaction can be written as:

2Al+2NaOH+2H

2

O→2NaAlO

2

+3H

2

Answer 2

Hydrogen gas is evolved when Al reacts with Con.KOH.

Reaction

• When Aluminium reacts with Concentrated caustic potash it forms potassium aluminate and hydrogen gas.
• The equation can be written as,

$Al+ KOH --- > H_2 + K_3AlO_3$

• Now we have to balance the equation by equating the number of all the atoms on both sides of the equation are,

$2Al+ 6KOH --- > 3H_2 +2 K_3AlO_3$

• Thus the balanced equation may be written as,

$2Al+ 6KOH --- > 3H_2 +2 K_3AlO_3$