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Question

KMnO4 crystals dissolve faster in hot water than in cold water. Which is true for this observation?

A
The rate of diffusion is higher at higher temperatures.
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B
The rate of diffusion is higher at lower temperatures.
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C
The rate of diffusion is same at all temperatures.
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D
Diffusion is not exhibited by this activity.
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Solution

The correct option is A The rate of diffusion is higher at higher temperatures.
Molecules move faster at higher temperatures, so the higher the temperature (the warmer the water), the faster potassium permangnate will diffuse into the water.

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