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Question 11 of 31
What is the molarity of 820 mL of Kl solution that contains 36.52 g of KI?
The Periodic Table
A. 45 mol/L
B. 0.27 mol/L
C. 2.7 x 10-4 mol/L
D. 0.45 mol/L

Sagot :

Neetooidn

Answer:

Molarity = 0.27 M

Explanation:

Given data:

Volume of solution = 820 mL (820/1000 = 0.82L)

Mass of KI = 36.52 g

Molarity of solution = ?

Solution:

Number of moles of KI:

Number of moles = mass/molar mass

Number of moles = 36.52 g/ 166 g/mol

Number of moles = 0.22 mol

Molarity = number of moles / volume in L

Molarity = 0.22 mol / 0.82 L

Molarity = 0.27 M

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