Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question

Question

What is the molar mass of magnesium pyrophosphate (Mg₂P₂O₇) used in phosphorus calculations?
Options
A 222 g/mol
Correct Answer
B 1877 g/mol
C 120 g/mol
D 174 g/mol
Correct Answer

Option A is the correct answer.

Detailed Explanation

Mg₂P₂O₇: 2×Mg (24.3) + 2×P (31) + 7×O (16) ≈ 48.6 + 62 + 112 = 222.6 g/mol ≈ 222 g/mol.

Hint

Two Mg, two P, seven O.

Question Info