94 Answer all questiens S Marksl a. Condensation of water vapor into liquid wate

Question

94 Answer all questiens S Marksl a. Condensation of water vapor into liquid water is an endothermic or esothermic peocess? Give a reason for your answer 2 marks) b. What is the effect of concentration of reactants on the rate of reaction Justify your anewer on the basis of collision theory 2 marks e. Reaction between nitropen and hydrogen so prodace anmonia gas in the presense of an iron based catalyst would be an example of homogeneous or heterogeneous reaction? (I mark) 03 Answer all questions 3 Marks a Stale the individual reaction order with resppect to all rcactants and the overal order of reaction for the rate w 3marks)

Explanation / Answer

(a) Condensation of water vapour to liquid water is an exothermic reaction. This is because when condensation occurs hydrogen bonds are formed and hence heat is released during the formation of these bonds. Another way to understand this is that when you convert liquid water to water vapour you supply heat to it and since condensation is reverse of this process, heat will be released.

(b) Rate of reaction increases with an increase in concentration of reactants. This is because more number of reactant molecules result in higher number of collisions which results in better probability of a reaction between them.

(c) This is an example of homogeneous reaction as the reactants and products are in the same phase.

Note: Answering only the first part according to Chegg guidelines

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