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A crystal of purple potassium manganate(VII) was added to each of the beakers shown in the
diagram.
One beaker contained hot water and the other beaker contained cold water.
In both beakers the purple colour of the potassium manganate(VII) spreads out.
Which result and explanation are correct?

A
Colour spreads faster in cold water - particle move faster at a higher temperature
B
Colour spreads faster in cold water - particle move slower at a higher temperature
C
Colour spreads faster in hot water - particle move faster at a higher temperature
D
Colour spreads faster in hot water - particle move slower at a higher temperature
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Solution
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Correct option is C. Colour spreads faster in hot water - particle move faster at a higher temperature
$$\text{1.Kinetic energy of particles is directly proportional to temperature .}$$
$$\text{2.Particles of potassium maganate spreads faster in higher temperature so colour spreads faster .}$$

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