What characteristics do atoms of carbon-12, carbon-13, and carbon-14 have in common?
1 answer:
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Answer: The reaction is exothermic. The value of q is -542 kJ.
Explanation:
Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and for the reaction comes out to be positive.
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and for the reaction comes out to be negative.
Thus evolves heat , it is exothermic in nature. The value of q is -542kJ.
<u>Answer:</u> The rate law for the reaction is
<u>Explanation:</u>
Rate law is the expression which is used to express the rate of the reaction in terms of the molar concentration of reactants where each term is raised to the power their stoichiometric coefficient respectively from a balanced chemical equation.
In a mechanism of the reaction, the slow step in the mechanism determines the rate of the reaction.
The chemical equation for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution follows:
The intermediate reaction of the mechanism follows:
<u>Step 1:</u>
<u>Step 2:</u>
<u>Step 3:</u>
As, step 2 is the slow step. It is the rate determining step
Rate law for the reaction follows:
......(1)
As, is not appearing as a reactant in the overall reaction. So, we apply steady state approximation in it.
Applying steady state approximation for from step 1, we get:
Putting the value of in equation 1, we get:
Hence, the rate law for the reaction is