14. Which will be more soluble in water? CCh or CH C 15. Which will be more solu
ID: 1025765 • Letter: 1
Question
14. Which will be more soluble in water? CCh or CH C 15. Which will be more soluble in water? HOCH CH-OH or CHCH OH 16. When Lil dissolves in water, the solution feels hotter Is the dissolution of lithium iodide endothermic or exothermic? Which is larger, the magnitude of the lattice energy or the heat of hydrationt 17. Consider the balanced chemical reaction HO2 (aq)+3l (aq) + 2H' (ag) I (aq)+ H:O () a. Write the expression for the rate of the reaction with respect to each of the reactants and products. b. In the first 10.0 seconds of the reaction, the concentration of H" drops from 0.750 M to 0.500 M, what is the average rate of this reaction during these 10 seconds? c. What is the rate of change of ls' over this time period? d. How much H:0 was formed in these 10 seconds? 18. A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. a. Write a rate law for this reaction. b. What is the overall order of this reaction? 19. The data below were collected for the reaction: [CH CI](M) 0.050 0.100 0.100 [Ch(M) 0.050 0.050 0.100 Initial Rate(M/s) 0.014 0029 0.041Explanation / Answer
14. CH2Cl2
15. HOCH2CH2OH
16. Its an endothermic reaction and heat of hydration will be more than lattice energy.
17.
(a) - d(H2O2) / dt = - (1/3)[d(I-) /dt] = - (1/2)[d(H+) /dt] = d(I3-)/dt = d(H2O)/dt
(b) -(1/2)[(0.5 - 0.75)/10] = 1.25 * 10-2 molL-1s-1 { Applying equation - (1/2)[d(H+) /dt] }
(c) the rate of change will be same as the rate law is equal for all reactants and products according to the equation given in (a)
(d) As the rate of formation is 1.25 * 10-2 molL-1s-1 in 1 second. In 10 seconds, it will be 0.125 M
it means 0.125 M * 18 = 2.25g or 2.25 mL. As in case of density of water, its 1g/mL
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