Part 1 1. An acid-base pair: a. Is a weak acid and its conjugate base - b. Is a

Question

Part 1 1. An acid-base pair: a. Is a weak acid and its conjugate base - b. Is a strong acid and its conjugate base c. Is any acid and its conjugate base 2. Comparing weak acids and strong acids of equal concentrations which of the following statements is true The pH of the weak acid will be higher than the pH of the strong acid The pH of the strong acid will be higher than the pH of the weak acid The pH of both acids will be equal a. b. c. 3. The conjugate base of HCO, is: ?. ???, 4. Which of the following is an acidic salt? a. Caci, b. Feci, 5. Which of the following is a basic salt? a. NaNO, b. NaHso 6. Which of the following is a neutral salt? a. uso, b. KNO, 7. For which of the following mixtures would the common ion effect apply: a. HCIO,-HCIO c. It would apply in both cases 8. A buffer: Prevents changes in pH Resists changes in pH a. b. 9. A buffer is effective: a. At up to ± 1 from the pH b. At up to I from the pk, 10. The equivalence point of a strong acid: a. Is at pH 7 b. Is above pH7 c. is below pH-7

Explanation / Answer

I am solving the first 4 question after 1 as it is already solved as per Chegg guidelines, post multiple question to get the remaining answers

2)

Strong acid will have higher [H+] than weak acid, which will lead to lower value of pH, since pH = -log[H+]

correct answer is option a (pH of weak acid will be higher than pH of strong acid]

3)

Conjugate base can be obtained by removing [H+], which means conjugate base will be HCO3-

4)

Correct answer is option b

Since FeCl3 salt is made by weak base Fe(OH)3 and strong acid HCl, so it will be acidic in nature

5)

NaNO3 since it is a salt of strong base NaOH and weak acid HNO3

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