Betermining the Effect of Temperature on the Reaction Rate ble III Determination
ID: 555030 • Letter: B
Question
Betermining the Effect of Temperature on the Reaction Rate ble III Determination number Volume of Volume of solution, m Volume of water, mL Temperature,Elaed time, s KMnO solution, mL 6035 0 average temperature, C S2 average elapsed time, s tos.S +421 O«s 1555 k.129 sec average temperature, ! 5-o_ ,average elapsed,time, s 1.OD 6.os Sec TO average temperature, average elapsed time,s 7+3s2 On average, the reaction time is decreased times when the reaction temperature was raised 10°C. On average, the reaction rate is increased- times when the reaction temperature was raised 10 35Explanation / Answer
Effect of temperature on reaction rate
Previously we have studied that an average increase of 10 oC in a reaction would double the rate of a reaction.
Now, looking at the data shown in the tabel above, we can claerly see that when the temperature of the reaction was increased from 35 oC to 45 oC, the rate of the reaction almost doubled (slightly lower), the reaction time reduced to half. Similarly, when the temperature of the reaction was again increased to 55 oC, we see an enhancement in the rate of the given reaction.
These observations clearly support our undertsnading of temperature effect on the reaction rate and enhancement by increasing temperature. Therefore it is safe to say that,
On average the reaction time is decreased 2 times when the reaction temperature was raised 10 oC.
On average the reaction rate is increased 2 times when the reaction temperature was raised 10 oC.
The increase in temperature results into an increase in the kinetic energy of the reactant molecules, which results into more collisions and more chances for them to cross the activation energy barrier and go to form the product.
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