Question 6.65

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Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

Question 6.65

Postby Bilal Pandit 1J » Thu Mar 05, 2020 6:42 pm

What range (in volts) does a voltmeter need to have to measure pH in the range of 1 to 14 at 25 8C if the voltage is zero when pH = 7?

If I use the lower concentration value at 10^-7, I keep getting half the value of the answer in the answer booklet.

Aman Sankineni 2L
Posts: 103
Joined: Fri Aug 30, 2019 12:17 am

Re: Question 6.65

Postby Aman Sankineni 2L » Fri Mar 06, 2020 3:16 pm

I think you need to use 10^-14 because that's where you would compare ph 14 and 1. If you use that in the denominator and numerator you should get +.828 and -.828, respectively.

Emma Popescu 1L
Posts: 105
Joined: Wed Sep 11, 2019 12:16 am

Re: Question 6.65

Postby Emma Popescu 1L » Sat Mar 07, 2020 10:06 pm

There is also a typo in this question and in the solutions manual. You should find the range in pH from 0 to 14.

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