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06-03-2020
Chemistry

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A chemist dissolves 660.mg of pure hydroiodic acid in enough water to make up 300.mL of solution. Calculate the pH of the solution.

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08-03-2020

Answer:

0.23

Explanation:

Mass= 600mg, Volume =300ml

To get the number of mole of HCl

n = mass/molar mass = 600/36.5 = 18.02 mole

Now to he the concentration of HCl

C= n / v

= 18.02/300

= 0.603mol/ml

But pH = - log [hydrogen ion]

Therefore pH = - log 0.603

=0.23

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