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

Q25

weakest acid --> will not release H+ that easily as other stronger acids, so Ka is very low

from the list

10^-10 is the weakest value, si HCN is the weakest acid from all

Q26

strong acids --> will donate H+ readily

from the list

there is no strong acid per se.

H3PO4 is considered to be strong since it donate sits first proton rather easily, but all other 2 protons are not that acidic

So choose none for techinical reasons

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