7, For a certain reaction of the general form aA products, a plot of the experim

Question

7, For a certain reaction of the general form aA products, a plot of the experimental data as in A versus time is linear. What is the reaction order with respect to reactant A? (2 pt) (A) Zero (B) First (C) Second (D) Third (E) Fourth 8. Which of the following statements is true concerning an aqueous solution of the strong acid HCIP (2 pt) (A) Cl is a stronger acid than H2O. (B) Cl is a stronger base than OH (C) H3O* is a stronger acid than HCI (D) H20 is a stronger acid than HCI (E) H,0 is a stronger base than Cr. 9, which of the following pairs of species is not a conjugate acid-base pair? (2 pt) (A) H,COs, HCO, (8) HocI, ocr (c)OH (D) Hso., so (E) HNO2, NO 10, which of the following compounds has the highest standard entropy per mole at 298 K? (2 pt) (A) H2O () (8) Br (g) (C)CO2 (g) (D) SiO (s) (E) CHsOH () -11. Complete each of the following nuclear equation and describe the type of radiation: (2 pt) 30 -12, what is the equilibrium constant expression for this system? (2 pt) H2(g) + 12(s)2HI (g) H = +51.8 kJ _13. A student is asked to prepare a buffer solution with a pH of 10.00. This can be accomplish solution containing which of the following? (HNO2Xs-45x104, HCN: Ka-43x100) (2 pt) ) HNO2 only (B) HCN only (C) HNO2 and NaNO2 (D) HCN and NaCN (E) HCN and HNO2 4. Which applies to any endothermic reaction? (2 pt)

Explanation / Answer

7. Option B, First order

8. Option C

9. Option E, it should be NO2- & not NO2+

10. Option C, since entropy is the measure of disorder

11. Beta emission, -1e0

12. Keq = [HI]2/[H2], solids won't contribute anything to equilibrium constant

13. Option E

14. Option B, for endothermic reaction delta H>0

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