Question

Balanced equation of sodium+ water --> sodium hydroxide + hydrogen

Answer 1

Answer:

2Na + 2H2O ---> 2NaOH + H2

Explanation:

Answer 2

Answer:

2Na + 2H2O = 2Na(OH) + H2

Explanation:

A.Na + B.H2O = C.Na(OH) + D.H2

Now,

A=C , 2B=C+2D , B=C

B has high number of valency. Then B value we will put as 1

So, 2=1+2D (A=C=B=1)

Now solving this 2-1=2D

D=1/2

So its not solve yet we will multiply whole equation by 2

2*Na + 2*H2O = 2*Na(OH) + 2*1/2H2

The final answer will be

2Na + 2H2O = 2Na(OH) + H2

This is the easiest method once you practice it.