Question

write equation for when Magnesium react with dilute sulphuric acid then gas is evolved​

Answer 1

Mg+H2SO4→MgSO4+H2

Magnesium combined with sulfuric acid produces magnesium sulfate and hydrogen gas.

Reactants:

The symbol for magnesium is Mg.

The formula for sulfuric acid is H2SO4

Products:

Magnesium forms a 2+ ion: Mg2+

The sulfate ion has a charge of 2−: SO2−4

The charges balance and thus the formula for 

magnesum sulfate is MgSO4

Hydrogen gas is diatomic: H2

Mg+H2SO4→MgSO4+H2

The reaction is balanced as written. Each side has one magnesium atom, two hydrogen atoms and one sulfate ion.

Answer 2

Mg + dilH2SO4 = MgSo4 + H2 gas is evolved