Boxes a-c AcidKa12 x 10Chlorous AcidHydrofluoric 7.2 x 10Acid44.0 x 10Nitrous Acid41.4 x 10Lactic Acid46.4 x 10Benzoic Acid1.8 x 10Acetic Acid5.Hypochlorous 3.5 x 108.AcidAmmonium 5.6 x 1010lon Enter the number only (no units)• Do not leave any spaces• Include the sign if your answer is negative (not necessary forpositive values)• Use a leading zero before the decimal when necessary• Report your number to 2 decimal places (regardless of thesignificant figures)• Correctly round your answer to the 2nd decimal place (marginof allowed error is only + 0.01, so always use un-roundednumbers in your calculations). If the last digits are zeros theywill not display once you click away, but the answer will stillbe marked correct.Examples: 12.34 or -0.56a) If there are 0.150 moles NH4* and 0.250 moles NH3 in0.1000 L of the buffer, then what is the initial pH of the buffer?pH initialb) If 0.090 moles HCl in 0.0100 L of solution is added to the0.1000 L of buffer, what is the final pH of the new solution?pH finalc) What is the change in pH?ApH%3D

Answered: Image /qna-images/answer/f7b3bb60-588c-46c5-86bb-4755d62b13b8.jpg

a) If there are 0.150 moles NH4* and 0.250 moles NH3 in 0.1000 L of the buffer, then what is the initial pH of the buffer? pH initial %3D b) If 0.090 moles HCl in 0.0100 L of solution is added to the 0.1000 L of buffer, what is the final pH of the new solution? pH final %3D c) What is the change in pH? ApH %3D

a) If there are 0.150 moles NH4* and 0.250 moles NH3 in 0.1000 L of the buffer, then what is the initial pH of the buffer? pH initial %3D b) If 0.090 moles HCl in 0.0100 L of solution is added to the 0.1000 L of buffer, what is the final pH of the new solution? pH final %3D c) What is the change in pH? ApH %3D

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 2RCYU: A student checked the accuracy of two standard top-loading balances by testing them with a standard...

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This was sent back. It is a chemistry sig problem in freshman chemistry Why is 1376 - (2.4x102)= to 1140 and Not 1136 when using sig figs. I thought subtraction went to the closest decimal. 1376 - 240 1136 Is there a different rule when using exponents. The 4 was the last sig fig in that problem. Should I really be looking at the last sig fig when adding and subtracting. Thank you