Question

enter the formula for the compound that forms from calcium and hydrogen phosphate. express your answer as a chemical formula. a chemical reaction does not occur for this question.

Explanation:

Step1: Determine ion charges

Calcium ion (\(Ca^{2+}\)) has a +2 charge. Hydrogen phosphate ion (\(HPO_4^{2-}\)) has a -2 charge.

Step2: Balance charges

To form a neutral compound, the number of positive and negative charges must be equal. Since the charge of \(Ca^{2+}\) is +2 and the charge of \(HPO_4^{2-}\) is -2, the ratio of calcium ions to hydrogen phosphate ions is 1:1.

Step3: Write the formula

Using the criss - cross method (or simply combining the ions with the ratio found), the formula is \(CaHPO_4\).

Answer:

\(CaHPO_4\)