3. Nitric acid is formed by the gas-phase hydrolysis of N,Os NOs + H2O 2HNo, Edf

Question

3. Nitric acid is formed by the gas-phase hydrolysis of N,Os NOs + H2O 2HNo, Edforward)s 15 kJ and Ea(reverse)-51 kJ/mo a. Sketch an energy profile curve for the reaction. b. Label both axes and show the activation energies of the forward and reverse c. What is the value of AH for the reaction? d. Show AH on your sketch. The oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the net reaction 4. The experimental rate law for this reaction is rate - k (H AsolI1(H,0') a. What is the order of the reaction with respect to 1? According to the rate law for the reaction, increasing in the concentration of hydronium ion by a factor of 3, has what effect on the rate of this reaction? b. 5. For the overall chemical reaction shown below 2H,s(g) + O2(g) 2S(s) + 2H20(1) which one of the following statements can be rightly assumed? a. The reaction is third-order overall. b. The reaction is second-order overall. c. The rate law is, rate KH SI 1O21 d. The rate law is, rate k[H S][02l e. The rate law cannot be determined from the information given.

Explanation / Answer

Ans 4

From the given rate law

Power of I- = 1

Order of reaction with respect to I- = 1

Part b

Power of [H3O+] = 1

Increase the hydronic ion by factor of 3

Rate of reaction will also increase buy a factor of 3.

Ans 5

Option E is the correct answer

Because there is no information given that the reaction is elementary or not.

Therefore We can't predict the order only on the basis of reaction.

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