Question

Give a balanced equation for obtaining hydrogen from cold water using trivalent active metal

Answer 1

Answer:

   2La + 6H₂O ⇒ 2La(OH)₃ + 3H₂O

Explanation:

Lanthanum is strong electropositive trivalent metal atom, whitish silver in color having solid state and reacts slowly with cold water to give out Lanthanum Hydroxide and Hydrogen. It reacts more vigorously with hot water with cold water reaction is considerably slow.

2La + 6H₂O ⇒ 2La(OH)₃ + 3H₂O

Hope this answer may help!