Answer:
d. The rate constant is independent of the concentrations of the reacting species.
Explanation:
According top law of mass action,
The rate of a reaction is directly proportional to product of active concentration of the reactant each raised to the power of their orders (experimentally determined numbers).
Where, k is rate constant
m and n are order
Hence, a is incorrect.
If order is equal to zero, it means that the rate does not depend on the concentration of that reactant which means that c is incorrect.
Rate constant in the expression of the rate law depends only on temperature and thus, d is correct.
Statement e is not always true.
Catalyst is the specie that alters the rate of a reaction which means that b is incorrect.
Answer:
for given question is 2.79 and
is 0.52
{i- vant hoff’s constant ; Kb- constant ; m molarity }
M = no. of moles of the solute present in one kg of solution
Let the weight of amount of solute be “w” and its molecular mass be “M”
Let the mass of the solvent in the given question be “x”
It will take 5.2 years to decay.
The half life of cobalt-60 is 5.2 years. The half life is the time taken for the mass of the substance to decrease by a half.
here, the amount of remaining substance is 50%,
so,
n. log (0.5) = log (0.5)
n = 1
So it would take 1 half lives to decay this much, which is 1 x 5.2 which is 5.2 years.
what do you mean by radioactive decay ?
The process through which an unstable atomic nucleus loses energy via radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A material that has unstable nuclei is considered as radioactive.
Learn more about decay here:-
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Answer:
Change in enthalpy for the reaction is -536 kJ
Explanation:
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