CH-1678
Temperature and rate
Chemistry · Secondary 4 · Hard · Temperature and rate
In an iodine clock reaction, experiment A is carried out at and experiment B at , with all other conditions kept the same.
Which statement correctly explains the effect of temperature on the time taken for the blue-black colour to appear?
Which statement correctly explains the effect of temperature on the time taken for the blue-black colour to appear?
- It is shorter in B because more particles have energy above activation energy.
- It is longer in B because particles collide less often.
- It is the same in both because temperature does not affect rate.
- It is shorter in B because activation energy becomes zero.
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