1. (10 pts.) Which of the following is the strongest acid and WHY? a.) Acetic acid, CH,COOH, K,= 1.8 x 109 at 25°C b.) F

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1 10 Pts Which Of The Following Is The Strongest Acid And Why A Acetic Acid Ch Cooh K 1 8 X 109 At 25 C B F 1 (84.89 KiB) Viewed 52 times

1. (10 pts.) Which of the following is the strongest acid and WHY? a.) Acetic acid, CH,COOH, K,= 1.8 x 109 at 25°C b.) Formic acid, HCOOH, K. = 1.8 x 104 at 25°C c.) Benzoic acid, HC,H,O2, K.6.4 x 109 at 25°C d.) Nitrous acid, HNO2, K.-4.0 x 104 at 25°C 2. (10 pts.) Which of the following is a buffer and WHY? a.) Hydrochloric acid, HCl, and sodium chloride b.) Perchloric acid, HCIOs, and sodium perchlorate c.) Benzoic acid, HC H5O2, and sodium benzoate d.) Sulfuric acid, H2SO4, and sodium sulfate 3. (20 pts.) Calculate the pH of a 0.15 M HBr solution AND classify the solution as acidic, neutral, or basic. a.) 0.82 basic b.) 0.82 acidic c.) 13.9 basic d.) 13.9 acidic 4. (20 pts.) Calculate the pH of a 0.15 M NaOH solution AND classify the solution as acidic, neutral, or basic. a.) 0.82 basic b.) 0.82 acidic c.) 13.2 basic d.) 13.2 acidic 5. (10 pts.) Define pOH. a.) POH = -log [H] b.) pOH = -log [OH ] c.) POH=a+ b2 d.) POH = 1 x 6. (20 pts.) For a solution with OH concentration of 5.6 x 10-7M, calculate the pH AND classify the solution as acidic, neutral, or basic. a.) 7.7 basic b.) -6.25 acidic c.) 6.25 acidic d.) O basic 7. (10 pts.) A measure of the amount of either acid or base a buffer can absorb while still resisting a change in pH is a.) always changing b.) not important c.) buffer capacity Page 1 of 1