can someone help me complete the following reactions and balance them?

Question

1. H2SO4(aq) + 2NaOH(aq)
2. 2H3PO4(aq) + 3Mg(OH)2 (aq)
3. H2CrO4(aq) + 2KOH (aq)
4. Al(OH)3 (aq) + 3HCLO4 (aq)
5. 2NaOH(aq) + H2CO3


Please tell me how u got the answers too!!! I need to learn how to do them as well.

Answer 1

1.) 1 H2SO4 + 2 NaOH => 2 HOH + 1 Na2SO4
2.) 2 H3PO4 + 3 Mg(OH2)2 => 1 Mg3(PO4)2 + 6 HOH
3.) 1 H2CrO4 + 2 KOH => 1 K2CrO4 + 2 HOH
4.) 1 Al(OH)3 + 3 HClO4 => 3 HOH + 1 Al(ClO4)3
5.) 2 NaOH + 1 H2CO3 => 1 Na2CO3 + 2 HOH

All you have to do is be sure you have the same amount of the same type of atom on either side of the arrow. It take time and patience and a lot of counting.

Answer 2

These are all acid/base reactions.
So your products will be a salt of the anion from the base and the cation from the acid, and water.
These aren't particular hard to balance, and you seem to be off to a good start.