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For each of the following solutions, calculate the initial pH and the final pH after adding...

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Chemistry

For each of the following solutions, calculate the initial pHand the final pH after adding 0.005 mol of NaOH.

270.0 mL of pure water

pHinitial, pHfinal

270.0 mL of a buffer solution that is 0.200 M in HCHO2 and 0.315M in KCHO2

pHinitial, pHfinal

270.0 mL of a buffer solution that is 0.325 M in CH3CH2NH2 and0.305 M in CH3CH2NH3Cl

pHinitial, pHfinal

Answer & Explanation Solved by verified expert
3.6 Ratings (522 Votes)
1 For pure water pH 70 Moles of NaOH added 0005 mol Volume of the solution V 270 mL 0270 L Hence concentration of NaOH NaOH OH 0005 mol 0270 L 001852 M Hence pOH logOH log001852 M 173 Hence final pH 14 pOH 14 173 1227 answer Q2 For HCOOH pKa 377 Hence initial    See Answer
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