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A chemistry graduate student is given 250.mL of a 0.10M chlorous acid HClO2 solution. Chlorous acid...

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Chemistry

A chemistry graduate student is given 250.mL of a 0.10M chlorousacid HClO2 solution. Chlorous acid is a weak acid withKa=1.1x10^−2.

What mass of NaClO2 should the student dissolve in the HClO2solution to turn it into a buffer with pH =2.40?

You may assume that the volume of the solution doesn't changewhen the NaClO2 is dissolved in it.

Be sue your answer has a unit symbol, and round it to 2significant digits.

Answer & Explanation Solved by verified expert
4.0 Ratings (650 Votes)
Calculate moles of HClO 2We have HClO 2 No of moles of HClO2 volume of solution in LNo of moles of HClO 2 HClO 2 volume of solution in LNo of moles of HClO 2 010 mol    See Answer
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