Question

KOH+H3PO4 Fe+H2SO4 Na2CO3+HCl CaO+HNO3 P2O5+H2O Fe2S3+H2SO4

Answer 1

3KOH+H3PO4=K3PO4+3H2O

Fe+H2SO4=FeSO4+H2

Na2CO3+HCl=NaCl+CO2+H2O

CaO+2HNO3=Ca(NO3)2+H2O

P2O5+3H2O=2H3PO4

2Fe2S3+3H2SO4=Fe2(SO4)3+6H2S

Answer 2

It looks like you've provided a list of chemical reactions involving different compounds and acids. These reactions appear to involve acid-base reactions and some redox reactions. I can certainly help you balance these equations and provide some information about each reaction if you'd like. Here are the balanced chemical equations for the reactions you've listed:

1. KOH + H3PO4 → K3PO4 + H2O Potassium hydroxide reacts with phosphoric acid to produce potassium phosphate and water.

2. Fe + H2SO4 → FeSO4 + H2 Iron reacts with sulfuric acid to produce ferrous sulfate and hydrogen gas.

3. Na2CO3 + 2HCl → 2NaCl + H2O + CO2 Sodium carbonate reacts with hydrochloric acid to produce sodium chloride, water, and carbon dioxide.

4. CaO + 2HNO3 → Ca(NO3)2 + H2O Calcium oxide reacts with nitric acid to produce calcium nitrate and water.

5. P2O5 + 3H2O → 2H3PO4 Phosphorus pentoxide reacts with water to produce phosphoric acid.

6. Fe2S3 + 6H2SO4 → 2FeSO4 + 3H2S + 3H2O Iron(III) sulfide reacts with sulfuric acid to produce ferrous sulfate, hydrogen sulfide gas, and water.

If you have any specific questions about these reactions or if you'd like more information, feel free to ask!