Answer the following questions: Aman and Rohan were working on the kinetics involved in…
Chemistry20253 marksShort answer
Answer the following questions:
(a)
Aman and Rohan were working on the kinetics involved in decomposition of hydrogen peroxide in the presence of iodide ions.
$\text{H}_2\text{O}_2(l) \rightarrow \text{H}_2\text{O} + \frac{1}{2}\text{O}_2(g)$
They both had their respective hypothesis as follows:
According to Aman the rate will be affected by changing the concentrations of hydrogen peroxide and iodide ions as iodide ions are involved in the reaction.
According to Rohan the rate will only be affected by changing the concentration of hydrogen peroxide.
They carried out several experiments to check their respective hypothesis. Their results are shown graphically below:
(i) What do you think whose hypothesis is correct and why?
(ii) Do you think that the half -life of this reaction will change if concentration of hydrogen peroxide is reduced to half. Give a reason.
(b)
In a chemical reaction, two reactants take part. The rate of reaction is directly proportional to the concentration of one of them and inversely proportional to the concentration of other. What will be the unit of its rate constant if the concentration terms are in mol/L?
