Calculate the number of grams of solute in 500.0 mL of 0.169 M KOH. A) 166 g B) 1.51 g C) 4.74 × 10³ g D) 4.74 g E) 1.51 × 10^-3 g

Question

Quizplus · Accepted Answer

To calculate the number of grams of solute:

1. Convert the volume to liters: 500.0 mL = 0.5000 L
2. Use the formula: moles = Molarity x Volume
   moles of KOH = 0.169 M x 0.5000 L = 0.0845 moles
3. Calculate the mass in grams using the molar mass of KOH:
   mass = moles x molar mass = 0.0845 mol x 56.11 g/mol = 4.74 g

Therefore the correct answer is D, 4.74 g.

Calculate the Number of Grams of Solute in 500