8. Which of the following ionizes partially? a) strong acid c) acidic salt b)wea

Question

8. Which of the following ionizes partially? a) strong acid c) acidic salt b)weak acid basic salt 9. A proton donor in the reverse direction is a) an acid b) a base d) a conjugate base a conjugate acid 10. 10 mL of o.1 M NaOH is titrated with 40 mlL of 0.1 M acetic acid. The millimoles o Acetic acid remaining is a) 1 b) 3 c) 4 d) 5 11. If the K, for acetic acid is 1.8 X 10s, HC,H,0 or HOAc, then the pH of 0.10 M acetic acid, HOAc is a) 1.00 b) 2.88 c) 11.12 d 13.00 12. If a weak acid has a pKa of 5.0, then it can be used to make a buffer of pH a) 5.5 b) 7.0 c) 9.0 d) 11.5 13. For the reaction 2 NO + 2H2 N2 + 2H2O the rate law can be written as rate k[NO] I2]. Given the tabulated data, deduce the rate law Run [H2] 0.10 0.10 0.20 Rate (Mmin) 0.20 0.40 0.40 0.012 0.048 0.096 c) Rate = k[NO]2[H2]2 b) Rate k[NO] [H2]2 d) Rate-k[NO]2[H2]1 14. For the reaction: 2NH3 N2 + 3H2 , if nitrogen gas is formed at a rate of 0.020 mol/L s, then ammonia is reacted at a rate of a) O.010 mol/L's 0.040 mol/L s b) 0.020 mol/L's d) 0.030 mol/L's 15. A catalyst may be defined as: a) a substance that increases the order of a reaction b) a substance that increases the energy of activation of a reaction c) a substance that increases the temperature of a reaction a substance that increases the rate of a reaction without being consumed.

Explanation / Answer

18. Strong acid dissociates completely and forms ions.

Ex: HCl ----> H^+ + Cl^-

Weak acid dissociates partially.

Ex: CH3COOH = CH3COOO^- + H^+

Thus, answer is b.

As per chegg guidelines, first question is answered.

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