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Author Question: At 70C, the ion-product constant of water, Kw, is 1.53 1013 The pH of pure water at 70C is: (Read 43 times)

RODY.ELKHALIL

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on: Mar 21, 2021

Question 1

As water is heated, its pH decreases. This means that:

◦ the water is no longer neutral.
◦ the Kw value is decreasing.
◦ the water has a lower [OH–] than cooler water.
◦ the dissociation of water is an endothermic process.
◦ None of these are correct.

Question 2

At 70°C, the ion-product constant of water, Kw, is 1.53 × 10–13 The pH of pure water at 70°C is:

◦ 7.000.
◦ 6.508.
◦ 5.828.
◦ 6.408.
◦ None of these are correct.
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Marked as best answer by RODY.ELKHALIL on Mar 21, 2021

amcvicar

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Reply #1 on: Mar 21, 2021
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RODY.ELKHALIL

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Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

Jsherida

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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