Convert 0.015 M Ca²⁺ to equivalents of Ca²⁺. A) 0.015 equivalents B) 7.5 *10 ^- ⁴ equivalents C) 0.030 equivalents D) 15 equivalents E) 0.75 equivalents

Question

Quizplus · Accepted Answer

Molarity (M) is defined as the number of moles of solute per liter of solution. To convert to equivalents, we need to multiply by the number of ions per molecule. Ca²⁺ has a total of 15 ions: - 1 Ca2+ ion - 1 S2- ion - 12 HPO42- ions - 1 SO42- ion Therefore, to convert the molarity to equivalents, we need to multiply by 15: 0.015 M Ca²⁺ x 15 equivalents/molecule = 0.225 equivalents However, since we are looking for the equivalents of Ca²⁺ only, we need to adjust for the fact that there is only one molecule of it in the solution. So, the final answer is: 0.225 equivalents / 1 molecule = 0.225 equivalents/molecule = 0.030 equivalents Therefore, the correct choice is C.

Convert 0.015 M Ca2+ to Equivalents of Ca2+

Convert 0.015 M Ca²⁺ to Equivalents of Ca²⁺