Question

An acid (X) reacts with a base (Y) to produce Mg3(PO4)2. What are X and Y? X = H3PO3; Y = Mg(OH)2 X = H3PO4; Y = Mg(OH)2 X = H3PO4; Y = Ca(OH)2 X = H3PO3; Y = Ca(OH)2

Answer 1

Answer: B

Explanation: edge2023

Answer 2

Answer: X =
`H_3PO_4`; Y =
`Mg(OH)_2`

Explanation: When an acid reacts with the base then it undergoes neutralization to form a salt and water.

An acid is a substance that ionizes in the water to give hydrogen ion and have pH less than 7.

`H_3PO_4\rightarrow 3H^++PO_4^(3-)`

A base is a substance that ionizes in the water to give hydroxide ion and has pH more than 7.

`Mg(OH)_2\rightarrow Mg^(2+)+2OH^-`

Salts are neutral compounds with pH equal to 7.

`2H_3PO_4+3Mg(OH)_2\rightarrow Mg_3(PO_4)_2+6H_2O`