Question

write balanced equation for calcium reacts with hydrogen​

Answer 1

Answer:

CaH2 + 2 H2O → Ca(OH)2 + 2 H.

Answer 2

ANSWER

(a) Calcium reacts with cold water to form calcium hydroxide and hydrogen gas.

Reaction: Ca(s)+2H

2

O(l)→Ca(OH)

2

(aq)+H

2

(g)

(b) When irons reacts with dilute sulphuric acid, it forms iron sulphate and hydrogen gas.

Reaction: Fe(s)+H

2

SO

4

(aq)→FeSO

4

(aq)+H

2

(g)

When hydrogen gas is ignited with a burning matchstick, it produces a ' pop' sound.