Problem 12.19 6th ed

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Jane Burgan 1C
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Problem 12.19 6th ed

Postby Jane Burgan 1C » Mon Dec 03, 2018 11:48 am

The concentration of HCl in hydrochloric acid is reduced to 12% of its initial value by dilution. What is the difference in the pH values of the two solutions?

How do you figure out this problem?

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Re: Problem 12.19 6th ed

Postby Chem_Mod » Mon Dec 03, 2018 3:17 pm

Think about how you figure out pH values. What are pH values dependent on? pH values are dependent on the H+ concentration. Thus, if the H+ concentration is reduced, what happens to the pH?

Adam Vuilleumier 2K
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Re: Problem 12.19 6th ed

Postby Adam Vuilleumier 2K » Mon Dec 03, 2018 4:06 pm

The problem becomes a simple dimensional analysis problem when you remember that pH is just -log[H3O+] in mols of H3O+/Liter. Make sure to remember that since it's a log function, the greater the H3O+ concentration, the LOWER the pH will be.

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Re: Problem 12.19 6th ed

Postby KarlaArevalo2F » Mon Dec 03, 2018 9:13 pm

How would we solve for the concentration? I am stuck as to how to even start.

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