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WorksheetsX-SCI-L:10-P-3
Total questions: 10
Worksheet time: 5mins
...................of a chemical reaction is the change in anount of the reactants or products per unit time.
Rate
change in free energy
change in enthalphy
change in entropy
In the reaction,A→B
[A]=?
speed of A
Change in concentration of A
concnetration of A
In the reaction,A → B,
[B]=?
Change in the concentration of B
change in the speed
rate of the reaction
concnetration of B
– d[A]/ dt is the ....................
concnetration of A
Rate of the reaction
time of the raection
– d[A]/ dt, the negative sign indicates the ................. in the concentration of A
increase
decrease
The reaction of sodium with hydrochloric acid is faster than that with acetic acid because
Hydrochloric acid(HCl)is a strong acid
Acetic acid (CH3COOH) is a weak acid
Hydrochloric acid(HCl)is a strong acid
Acetic acid (CH3COOH) is a weak acid
Changing the amount of the reactants ....................the reaction rate.
decrease
increase
When the reaction mixture is heated the reaction(endothermic) rate .....................
decreases
increases
not change
A ................. is a substance which increases the reaction rate without being consumed in the reaction.
rate
reactant
catalyst
speed
At the state of equilibrium the rates of the forward and backward reactions are......................
equal
not equal
