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January 19, 2017
Posted by **will.i.am** on Tuesday, January 8, 2013 at 11:48am.

H2SO4 + NaOH --> H2O + Na2SO4

so i know you need 2 Na on each side but then I cant figure out the #'s for O or H

- chemistry -
**DrBob222**, Tuesday, January 8, 2013 at 2:00pm2NaOH + H2SO4 ==> 2H2O + Na2SO4

Equations like this are balanced by inspection which in simple terms means trial and error. You learn how to do these by practice; the more practice you get the better you become. Here is the process I go through.

NaOH + H2SO4 ==> Na2SO4 + H2O

The first RULE to remember is that you MAY NOT change any of the subscripts; you may change ONLY the coefficients.

I look at the equation and I see 2 Na atoms on the right so I know to make 2 Na atoms on the left like this.

2NaOH + H2SO4 ==> Na2SO4 + H2O

That makes Na ok. The SO4 is ok so I won't bother with it. For H I count up what I have on the left side and make the right side equal to that number. I see 2 H atoms from 2NaOH and I see 2 H atoms for H2SO4. That makes 4 H atoms on the left and can get 4 H atoms on the right with 2H2O.

2NaOH + H2SO4 ==> Na2SO4 + 2H2O

How do you know it is balanced? You ALWAYS check it.

I see 2 Na on the left and right.

I see 6 O atoms on the left (2 from NaOH and 4 from H2SO4) and there are 6 on the right(4 from SO4 and 2 from 2H2O).

I see 4 H atoms on the left (2 from 2NaOH and 2 from H2SO4). There are 4 H atoms on the right from 2H2O.

Don't get discouraged. This will come along with practice.