1. In Acidic Buffer solution (HNO;J/INO,] when the value of pH - pka +1, the ratio of (HNO,/[NO,] is 2. The most effective pH buffering range for a benzoic acid/benzoate buffer is .(Ka of benzoic acid - 6.3 x 10) 3. The pOH of 20 % titration of 20 ml of 0.10 M HCI with 0,10 M NaOH Is .

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.58QE
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1. In Acidic Buffer solution [HNO,/INO,] when the value of pH pKa +1, the ratio of (HNO,1/INO,] is.
2. The most effective pH buffering range for a benzoic acid/benzoate buffer is.. ( Ka of benzoic acid - 6.3 x 10*)
3. The pOH of 20 % tltration of 20 ml of 0.10 M HCI with 0,10 M N2OH is.
4. If a 40.0 mL sample of 0.300 M formic acid is titrated with 0.200 M NAOH. at the equivalence point the pH is
(Kb - 5.6x10-10 ).
5. An ore is analyzed for the Iron content by converting the Iron to Fe (OH), and weighing it. If a 1.543 g sample yields
0.160 g of Fe;Os, the percent of Fe,0, in the sample will be . [Fe,O3=160g/mol, Fe,0,-231.5 g/mol]
.....
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Transcribed Image Text:1. In Acidic Buffer solution [HNO,/INO,] when the value of pH pKa +1, the ratio of (HNO,1/INO,] is. 2. The most effective pH buffering range for a benzoic acid/benzoate buffer is.. ( Ka of benzoic acid - 6.3 x 10*) 3. The pOH of 20 % tltration of 20 ml of 0.10 M HCI with 0,10 M N2OH is. 4. If a 40.0 mL sample of 0.300 M formic acid is titrated with 0.200 M NAOH. at the equivalence point the pH is (Kb - 5.6x10-10 ). 5. An ore is analyzed for the Iron content by converting the Iron to Fe (OH), and weighing it. If a 1.543 g sample yields 0.160 g of Fe;Os, the percent of Fe,0, in the sample will be . [Fe,O3=160g/mol, Fe,0,-231.5 g/mol] ..... Use the editor to format your answer
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