Question

can you answer the following?

ULTIPLE CHOICE. Choose the one alternative that best comp letes the statement or answers the question. 1) The conjugate base of HS04 is A) so42 ) HSO4 C) H2s04 D) OH E) H3S04 2) What is the pH of an aqueous solution at 25.0 "C in whichH is 0.00250 M? 2) A) -3.40 8) 3.40 C) 225 D) 2.60 E) -2.60 3) What is the pH of an aqueus solution at 25.0 C that contains 398 10-9 M hydronium ion? E) 8.40 3) A) 5.60 8) 7.00 C) 398 D) 9.00 4) What is the concentration (in M) of hydroxide ions in a solution at 25.0 C with pH-4.2827 4) A) 9.72 B) 1.91 10-10 C) 4.28 D) 522x 10-5 E) 1.66 x 104 RUE/FALSE. Write 'A" if the statement is true and 'B' if the statement is false 5) For any buffer system, the buffer capacity depends on the amount of acid and base from which the5) buffer is made. 6) The solubility of slightly soluble salts containing basic anions is proportional to the pH of the solution. ULTIPLE CHOICE. Choose the one alternative that best comp letes the statement or answers the question. 7) The Ka of hypochlorous acid (HCIO) is 3.00x 10-8 at 250 C. Calculate the pH of a 0.0385M 7) hypochlorous acid solution. A) 752 B) 1.41 C) 8.94 D) 4.47 E)-1.41

Answer 1

Answer :-

These questions are solved by using the simple formula of pH and pOH and other simple reason.

The answer is given in the image,

2- PM- 2.6o D)2-60 PM 8.40 8.40 4. P": 4.282 poM 14-PH 14- 4.282 pon- 9-418 [or]: 10-por-10-3-118 Cor] 1.31x10 С. В false) 0.0385 0-0385