The ions Ca²⁺and PO₄³^-form a salt with the formula _.

Question

Quizplus · Accepted Answer

The cation in the salt is Ca2+ and the anion is made up of the following ions: S1U1P12S1S1P0S1U1P1-, S1S1P0, and POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-. To write the formula, we need to have the same number of positive and negative charges, so we need two anions. The anion with the most negative charge is POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1-, so we will use two of these. The cation has a charge of 2+, so each anion needs a total charge of 2- to balance this. The anion POS1U1B14S1U1B0S1U1P13S1S1P0S1U1P1- has a charge of 2-, so we only need one of these. This leaves the anion S1U1P12S1S1P0S1U1P1-S1S1P0, which has a total charge of 1-. We need a total charge of 2- from this anion, so we need two of them. The formula for the salt is therefore CaS1U1B13S1U1B0(POS1U1B14S1U1B0)S1U1B12S1U1B0.

The Ions Ca2+ and PO43- form a Salt with the Formula

The Ions Ca²⁺and PO₄³^-form a Salt with the Formula