10. A solution contains 130 grams of KNO3 dissolved in 100 grams of water When 3 more grams of KNO3 is added, none of it dissolves, nor do a

Question

10. A solution contains 130 grams of KNO3 dissolved in 100 grams of water When 3 more grams of KNO3 is added, none of it dissolves, nor do any additional crystals appear. The temperature of the solution is closest to

A.65 Celsius

B. 68 Celsius

C. 70 Celsius

D. 72 Celsius

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Nguyệt Ánh 4 years 2021-09-05T07:01:39+00:00 2 Answers 122 views 0

Answers ( )

  1. Ben
    0
    2021-09-05T07:03:05+00:00
    Reply

    Answer:

    Option B

    Explanation:

    We will check the solubility graph for potassium nitrate,  KNO
    3. Based on the graph it can be said that the temperature of solution when 130 grams of KNO3 dissolves in 100 grams of water is near to 65 degree Celsius. Now if three grams of solute is increased then the temperature of the solution will increase by a degree or so and hence the most probable temperature would be 68 degree Celsius.

    Hence, option B is correct

  2. ngockhue
    0
    2021-09-05T07:03:08+00:00
    Reply

    Answer:

    B. 68 Celsius

    Explanation:

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