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sergij07 [2.7K]
3 years ago
11

A 10.0 % (m/m) solution of potassium chloride, KCl dissolved in water has a density of 1.06 g/mL. What is the molar concentratio

n of this aqueous solution? Molar Mass (KCl) = 74.55 g/mol
Chemistry
1 answer:
hodyreva [135]3 years ago
5 0

Answer:

1,42M

Explanation:

Molar concentration is given in moles of solute per liter o solution. Assuming you have 100g of solution:

10g KCl × (1mol / 74,55g) = <em>0,134 moles of KCl</em>

As you have 100g of solution:

100g × (1mL / 1,06g) × (1L / 1000mL) = <em>0,0943L</em>

<em> </em>

That means molar concentration is:

0,134 moles of KCl / 0,0943L = <em>1,42M</em>

<em></em>

I hope it helps!

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