Solution Found!
Answer: A quantity of 18.68 mL of a KOH solution is needed
Chapter 4, Problem 89P(choose chapter or problem)
A quantity of 18.68 mL of a KOH solution is needed to neutralize 0.4218 g of KHP. What is the concentration (in molarity) of the KOH solution?
Questions & Answers
QUESTION:
A quantity of 18.68 mL of a KOH solution is needed to neutralize 0.4218 g of KHP. What is the concentration (in molarity) of the KOH solution?
ANSWER:Step 1 of 2
The goal of the problem is to calculate the concentration (in molarity) of the KOH solution.
Given:
Volume of KOH solution = 18.68 mL = 18.68 L
Mass of KHP = 0.4218 g.
The reaction between KHP () and KOH is:
The molarity can be calculated using the formula:
Molarity =
Let’s first, find the number of moles in KOH using the mass of KHP:
Molar mass of KHP = 204.22 g/mol
The mole ratio of KOH and KHP is 1: 1.
= 0.4218 g KHP
= 2.0654 mol KOH