Match the following aqueous solutions with the appropriate letter. 1. 0.19 m AgNO3 2.

Question

Match the following aqueous solutions with the appropriate letter.

1. 0.19 m AgNO3
2. 0.17 m CrSO4
3. 0.13 m Mn(NO3)2
4. 0.31 m Sucrose(nonelectrolyte)

a. Highest boiling point
b. Second highest boiling point
c. Third highest boiling point
d. Lowest boiling point

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Mộc Miên 4 years 2021-08-21T16:09:05+00:00 1 Answers 7 views 0

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  1. trucchi
    0
    2021-08-21T16:10:10+00:00
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    Answer:

    Explanation:

    When a salt is dissolved , it increases  the boiling point . Increase in boiling point depends upon number of ions . So it is a colligative property .

    .19 m AgNO₃ . Each molecule  will ionize into two ions . So effective molar concentration is 0.19 x 2 = .38 m

    0.17 m CrSO4.Each molecule  will ionize into two ions . So effective molar concentration is 0.17 x 2 = .34 m

    0.13 m Mn(NO₃)₂. Each molecule  will ionize into three  ions . So effective molar concentration is 0.13 x 3 = .39 m

    0.31 m Sucrose(nonelectrolyte). Molecules will not ionize . So effective molar concentration is 0.31 x 1 = .31 m

    Higher the molar concentration , greater the depression in boiling point .

    So lowest boiling point is 0.13 m Mn(NO₃)₂.

    second highest  boiling point is 0.19 m AgNO3.

    Third lowest boiling point is 0.17 m CrSO4

    Highest boiling point or lowest depression 0.31 m Sucrose.

    a . 4

    b .  1

    c . 2

    d . 3


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