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.
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3f94b6c4-8026-41b5-a2ce-ea2500e29589%2F7b1c9595-7412-4431-915a-42fb8e745ea4%2Fkrv0eaq.jpeg&w=3840&q=75)
Transcribed Image Text: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.
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