Chemistry, 26.02.2021 17:30, kevenluna10oytivm
1) 45.0 mL of 0.125 M benzoic acid C6H3COOH is titrated with 0.25 M NaOH.
Ka of the acid is 6.46 x 10-5. Calculate the pH of the solutions at the following points of the
titration. Indicate whether the solution is buffer or not at these points.
a. After adding 15 mL of NaOH.
I
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Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic
Answers: 1
1) 45.0 mL of 0.125 M benzoic acid C6H3COOH is titrated with 0.25 M NaOH.
Ka of the acid is 6.46 x...
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