Question

name the gas produced when (a) a piece of calcium is added to water (b) when fossil fuel is burnt

Answer 1

Calcium + Water. In the following demonstration, a chunk of calciummetal is dropped into a beaker of distilled water. After a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide.

Answer 2

a) CA +2H2O reacts Ca(OH)2 + H2
b) SO2 forms