Question

please can someone answer all five questions thank you

Question 8 What is the pOH of a 0.01743 M solution of LIHS? The K, of H2S is 8.9x10 Question 9 What is the pOH of a 0.01743M solution of LiHS? The Kg of H2S is 8.9x10 Question 10 What is the pH of a 12.5 M solution of H,SO,? The first proton completely dissociates; the K, for the second proton is 1.2x10- question 12 What is the pH of a solution that contains 0.50M H,PO, and 0.89 M NaH,PO.? The K, of H,PO, is 7.5x10-3 Question 13 What is the pH of a solution of the buffer containing 0.0090 M HC,H,NCI and 0.0082 M CH,N? The K, of HCH,N- is 5.88x10 119 words ge 1 of 1 9:08 P 10/30/20

Answer 1

8. LiHS (ap) Litlap.) + HS (ad) Hsº undergo hydrolysis as it is conjugate base weak aud (15) SO H, Scal) + 0 HS (apotho 30 ph of solution is calculate as Kat pkw + log() c= concentration of base pra of acid bka = -log (Kg) = -log (8.9x109) = 7.05 C= 0.01743M Kw = 14 bus pu= }(7.05+14+ log 10.01743) 9.65 put poh = 14 bok = 14-54 = 14-9.65 = 4.35 pon of sol = 4.35 so are some ph=9.65 pon=4.35 Question 8 89