The graph given below shows the motion of four runners P, Q, R, and S in a 5 km marathon.
1 answer:
Answer:-
As we can see from the graphical data,
The distance covered by all the four runners is the same 5 km.
Among the four athletes, Athlete P covers the distance in under three hours.
It is the minimum time taken among the four athletes.
Thus Athlete P covers the 5 km distance in the minimum amount of time.
We know that speed =
Since time taken for P is minimum, his speed is the maximum. P ran the fastest.
Time taken by Q = 4.5 hours.
Speed of Q =
=
= 1.1 km/ hr
Time taken by R = 6 hours.
Speed of R =
=
= 0.8 km/ hr
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Explanation:
(a) According to Le Chatelier's principle, any disturbance caused in an equilibrium reaction will shift the eqilibrium in a direction that will oppose the change.
For example,
So, in this reaction when we any of the reactants then it means there is less stress on reactant side. Hence, the reaction will move in the backward direction.
Whereas when we remove then there will be decrease in concentration of products as the concentration of carbon dioxide has decreased. Hence, the reaction will shift on the product side, that is, reaction will shift in the forward direction.
Thus, we can conclude that out of the given options removing as it is formed would force the reaction to favor the produc to favor the products.
(b) As the reaction equation is as follows.
Since, it is an exothermic reaction, that means when temperature is increasing then more amount of energy will release on the product side.
Hence, the reaction will shift on the reactant side, that is on the left hand side equilibrium will shift.