24. What is the pH of a 0,15 M Ba(oHe solution? A 1348 B, 0.52 D. 082 E 14.15 25

Question

24. What is the pH of a 0,15 M Ba(oHe solution? A 1348 B, 0.52 D. 082 E 14.15 25. Which of the following is the weakest acid? s 104) C. HNO: Ka 4.5x10 E acetic acid (Ka 1.8x 10 A. HF Ka 6.8 B, HCIO (Ka 3.0 s 10*) 26, Which, if any of the following acids is strong? A phosphoric, IbPO. Which one of ue pairs 100 Mselurians when mised will produce a buner All the solutions are 0100 M before A ml, aqueous CHKoooll and 25 ml afaqueo Ha C. So of aqueous Naoll and 50 ml af aqueous HCl A container af antibioie is labeled metracycline hydrachiaride Thi me R tetracycline contains an amine that har and chloride isthe C. tetracycline contains a arteskyl group the pills will dissolve wel in A is greater than B, is equal is less than 70. D is equal to the pk.af the acid. 30 Aecording to the second law of thermodynamics the change the af the (As during a spontaneous reaction is D, less than the change in entropy ofue esaem E greater than the change in ofthe esiamas

Explanation / Answer

24)

Ba(OH)2 ------> Ba+2 + 2OH-

x x x

Ba(OH)2 is a strong base, so it is completely hydrolyzed.

pOH= -log[OH]= -log[ 0.15+2]=0.52

pH + pOH= 14

pH+ 0.52=14

=> pH =13.48

Option A is correct.

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