Question

Balance the chemical equation NaOH+H2so4 ----------->na2so4+h20

and explain briefly how u have balanced

Answer 1

2 NaOH+H2SO4   ---->  Na2SO4 + 2 H2O

Explanation:
To balance any chemical equation, we always obey the law of conservation of mass.

To balance,
STEP 1:
Starting from first element (i.e. Na in this case ) check if the number of atoms in reactants and product are same.

STEP 2:
If you encounter any lack then multiply it by any number so that there are equal number of atoms of that element both side.

Mind it that this is a hit and try method , practice more and more only then you can solve these

Answer 2

2NaOH+H2SO4   ---->  Na2SO4 + 2H2O