Calculate the mole fraction of CaBr₂ in an aqueous solution prepared by dissolving 0.400 moles of CaBr₂ in 850.0 g of water. A) 0.00841 B) 0.0540 C) 0.00900 D) 0.0252 E) 0.0167

Question

Quizplus · Accepted Answer

The mole fraction is calculated using the formula: mole fraction = moles of solute / (moles of solute + moles of solvent). First, convert the mass of water to moles (water's molar mass is approximately 18.015 g/mol): 850.0 g / 18.015 g/mol = 47.18 moles of water. Then, calculate the mole fraction: 0.400 moles CaBr2 / (0.400 + 47.18) = 0.400 / 47.58 = 0.00841.

Calculate the Mole Fraction of CaBr2 in an Aqueous Solution

Calculate the Mole Fraction of CaBr₂ in an Aqueous Solution