Can you please right the answers on the paper. Kindly asking to help) (3p) Al S

Question

Can you please right the answers on the paper.

Kindly asking to help)

(3p) Al S 9 10 11 12 (8B) (8B) (11B) (12B) 2698 28.9 30.97 32.07 35.4539.95 7 2829 130 +2 31 32+2 3334 35 36 58.93 58.59 63.55 65.41 45 3 46 2 47 + 482 72 172.64-174.92 . 78.96 | 79.90-83.80- 49 50 + 51 52 53 1 54 1. Calculate the pH of a 0.00001 M solution of HCI. What is the hydroxide ion concentration? 2. Which of salts hydrolyze in aqueous solution: CH COONa, (NH)2SO Alu(SO,)j? Write ionic equations for the hydrolysis reactions. Predict the pH of the solution equal 7, greater than 7, less than7). 25 158.93 162.50 164.93 16726 168.93 173.04 3 97 3 98 3 99 100 101 102 1-1 (247) |(251 | (258) | (259) (257 -

Explanation / Answer

1. HCl is a strong acid which completely disassociates into ions.

So, [HCl] = [H+]

[H+] = 0.00001 M

pH = -logH+ = -log(0.00001) = 5

[H+][OH-] = 10-14

[OH-] = 10-14/[H+] = 10-14/10-5 = 1.0*10-9M

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