SSC
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following will slow down the rate of a chemical reaction
|
|
absence of a catalyst
|
|
|
the concentration is increased
|
|
|
the temperature is increased
|
|
|
both concentration and temperature is increased
|
Explanation:
Detailed explanation-1: -When you lower the temperature, the molecules are slower and collide less. That temperature drop lowers the rate of the reaction. To the chemistry lab! Sometimes you will mix solutions in ice so that the temperature of the system stays cold and the rate of reaction is slower.
Detailed explanation-2: -It is important to note that a few reactant particles do have enough energy to collide and initiate a reaction without the use of a catalyst. However their numbers are so low that a reaction can not be sustained. In the absence of a catalyst the reaction is too slow.
There is 1 question to complete.