50mL of potassium hydroxide (KOH) solution contains 7 grams of potassium hydroxide.
What is the molarity (mol/L) of the potassium hydroxide solution?
Given the atomic masses:
K = 39, O = 16 and H = 1
1
Expert's answer
2018-09-06T07:27:32-0400
Answer: Number of moles of potassium hydroxide = mass/ MW = 7g / 56 g/mole = 0.125 moles Molarity of the solution = Number of moles of potassium hydroxide / Volume of solution = 0.125 moles / 0.05 L = 2.5 mol/L
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