Question

1) Mg OH + H Ch=2) Ca (OH)2 + HF= 3) H3 Po4 + KOH =

Answer 1

1) Mg(OH)2 + 2HCl = 2H2O + MgCl2

2) CA(OH)2 + 2HF = CaF2 + 2H2O

3) H3PO4 + KOH = H2O + KH2PO4

Answer 2

It appears that you've provided chemical equations, but they seem to be incomplete or incorrect. Chemical equations must represent balanced reactions with correct chemical formulas. I'll do my best to interpret what you might have intended and provide balanced equations:

1. Mg(OH)2 + H2O → (Assuming "H Ch" is meant to be "H2O" which is water) This equation represents the reaction between magnesium hydroxide (Mg(OH)2) and water (H2O) to form magnesium hydroxide in aqueous solution.

2. Ca(OH)2 + 2HF → CaF2 + 2H2O This equation represents the reaction between calcium hydroxide (Ca(OH)2) and hydrofluoric acid (HF) to form calcium fluoride (CaF2) and water (H2O).

3. H3PO4 + 3KOH → K3PO4 + 3H2O This equation represents the reaction between phosphoric acid (H3PO4) and potassium hydroxide (KOH) to form potassium phosphate (K3PO4) and water (H2O).

Please make sure to use correct chemical formulas and double-check the coefficients to balance the equations properly. If you meant something different, feel free to clarify!