Question

Balance a chemical reaction and give reasons for your answer:

i.Na +H2O-Na OH+H2

Answer 1

Answer:

2Na+2H2O→2NaOH+H2

Explanation:

You have to count the number of atoms in both sides of the reaction to be equal, to make it a little easier you can make a list. So in the equation Na+H2O→NaOH+H2, there are
1−Na−1
2−H−3
1−O−1
So you multiply NaOH and H2O by 2, so you have 4 hydrogens in both sides, and then multiply Na