Question

Помогите решить! 1)H3PO4+K2O-- 2)H3PO4+Mg-- 3)H3PO4+Cu(OH)2-- 4)H3PO4+Na2SiO3--

Answer 1

2H3PO4+3K2O=2K3PO4+3H2O
2. 2H3PO4+3Mg=Mg3(PO4)2+3H2
3. 2H3PO4+3Cu(OH)2=6H2o+Cu3(PO4)2

Answer 2

1) H3PO4 + K2O

When phosphoric acid (H3PO4) reacts with potassium oxide (K2O), it forms potassium phosphate (K3PO4). The balanced chemical equation for this reaction is:

2 H3PO4 + 3 K2O -> 2 K3PO4 + 3 H2O

2) H3PO4 + Mg

When phosphoric acid (H3PO4) reacts with magnesium (Mg), it forms magnesium phosphate (Mg3(PO4)2) and hydrogen gas (H2). The balanced chemical equation for this reaction is:

3 H3PO4 + 2 Mg -> Mg3(PO4)2 + 3 H2

3) H3PO4 + Cu(OH)2

When phosphoric acid (H3PO4) reacts with copper(II) hydroxide (Cu(OH)2), it forms copper(II) phosphate (Cu3(PO4)2) and water (H2O). The balanced chemical equation for this reaction is:

2 H3PO4 + 3 Cu(OH)2 -> Cu3(PO4)2 + 6 H2O

4) H3PO4 + Na2SiO3

When phosphoric acid (H3PO4) reacts with sodium silicate (Na2SiO3), it forms sodium phosphate (Na3PO4) and silicic acid (H4SiO4). The balanced chemical equation for this reaction is:

2 H3PO4 + 3 Na2SiO3 -> 2 Na3PO4 + H4SiO4

Please note that the above reactions are based on the balanced chemical equations. The actual reaction conditions and products may vary depending on the specific reaction conditions and concentrations of the reactants.

I hope this helps! Let me know if you have any further questions.