Asked by Margaret
Given the following functions, answer the questions:
Temperature (°C) Kw
0 1.1410−15
25 1.0010−14
35 2.0910−14
40. 2.9210−14
50. 5.4710−14
Is the autoionization of water exothermic or endothermic?
(b) What is the pH of pure water at 35°C?
(c) From a plot of ln(Kw) versus 1/T (using the Kelvin scale), estimate Kw at 38°C. (Give your answer to three significant figures.)
(d) What is the pH of a neutral solution at 38°C? (Give your answer to three decimal places.)
I was able to get the first part but I do not understand the rest of it
Temperature (°C) Kw
0 1.1410−15
25 1.0010−14
35 2.0910−14
40. 2.9210−14
50. 5.4710−14
Is the autoionization of water exothermic or endothermic?
(b) What is the pH of pure water at 35°C?
(c) From a plot of ln(Kw) versus 1/T (using the Kelvin scale), estimate Kw at 38°C. (Give your answer to three significant figures.)
(d) What is the pH of a neutral solution at 38°C? (Give your answer to three decimal places.)
I was able to get the first part but I do not understand the rest of it
Answers
Answered by
DrBob222
Ok. You have a partg.
b.
Kw = 2.09E-14; therefore,
(H^+) = sqrt(2.09E-14)
(H^+) = 1.44E-7 and pH = 6.84
c. You will need to plot.
d. Read the plot you made in c and follow the example I did in part b.I would guess Kw to be about 2.6 or 2.7E-14 at 38C.
b.
Kw = 2.09E-14; therefore,
(H^+) = sqrt(2.09E-14)
(H^+) = 1.44E-7 and pH = 6.84
c. You will need to plot.
d. Read the plot you made in c and follow the example I did in part b.I would guess Kw to be about 2.6 or 2.7E-14 at 38C.
Answered by
Margaret
I'm sorry but I am still confused.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.