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Nastasia [14]
3 years ago
15

Read the statement.

Chemistry
1 answer:
lina2011 [118]3 years ago
4 0

Answer:

60 g/L is the final concentration of NaI solution .

Explanation:

Molarity of NaI solution before evaporation =M_1= 0.2 M

Volume of NaI solution before evaporation =V_1= 2.0 L

Molarity of NaI solution after evaporation =M_2= ?

Volume of NaI solution after evaporation =V_2= 1.0 L

M_1V_1=M_2V_2 ( dilution)

M_2=\frac{M_1V_1}{V_2}=\frac{0.2 M\times 2.0 L}{1.0 L}=0.4 M

Molar mass of NaI = 150 g/mol

Concentration of NaI after evaporation :

0.4 M × 150 g/mol = 60 g/L

60 g/L is the final concentration of NaI solution .

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