1) Use the Ka information in your text to calculate the pH of a 0.10 M solution of sodium formate. Ka 17Y10(HCH O,) 131 ph-lug CH+] ph=D-1ogCl.30x O.10 HCOON- Ht+ NaL00- Ra=[H+] [uacoo-I %3D Ph=D4,88 [HCOO Na1 lit xiu-4=6.1o-x 1-x) l.7x1o-5 ニ (0.10- ×) T.7 x(US = (0.10 -x) =CHコ [Hサ]=13○x 10-5 2) What is the pH of a solution that contains 0.10 M cyanic acid and 0.20 M sodium cyanate? ph= pRa + d0g CAコ Ra = 3,5 ylo-4 CHAJ Ph-pka +log Co.201 Coilo] ph-pra+log lenjt 3.5 yio") +loyoy [0.20] lery = -y (3.5) +4 lo4p + loy f020 ph=3,45 - iny (315) +H10yio log10 O.2० = 3.45 0i10 3) Which of the above solutions is a buffer solution? Give a reason for your answer.

1) Use the Ka information in your text to calculate the pH of a 0.10 M solution of sodium formate. Ka 17Y10(HCH O,) 131 ph-lug CH+] ph=D-1ogCl.30x O.10 HCOON- Ht+ NaL00- Ra=[H+] [uacoo-I %3D Ph=D4,88 [HCOO Na1 lit xiu-4=6.1o-x 1-x) l.7x1o-5 ニ (0.10- ×) T.7 x(US = (0.10 -x) =CHコ [Hサ]=13○x 10-5 2) What is the pH of a solution that contains 0.10 M cyanic acid and 0.20 M sodium cyanate? ph= pRa + d0g CAコ Ra = 3,5 ylo-4 CHAJ Ph-pka +log Co.201 Coilo] ph-pra+log lenjt 3.5 yio") +loyoy [0.20] lery = -y (3.5) +4 lo4p + loy f020 ph=3,45 - iny (315) +H10yio log10 O.2० = 3.45 0i10 3) Which of the above solutions is a buffer solution? Give a reason for your answer.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter5: Equilibrium, Activity And Solving Equations

Section: Chapter Questions

Problem 10P

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