gisellekarime
02.01.2021 •
Chemistry
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
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Ответ:
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
Ответ: