0.225 M in HC2H3O2 (Ka=1.8×10−5) 4.50×10−2 M in acetic acid (Ka=1.8×10−5) and 4.50×10−2 M in hydrocyanic acid (Ka=4.9×10−10)

Chemistry: An Atoms First Approach
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Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter13: Acids And Bases
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Problem 87E: Use Table 13-3 to help answer the following questions. a. Which is the stronger base, ClO4 or...
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Find the pH of each mixture of acids.

0.115 M in HBr and 0.105 M in HCHO2 (Ka=1.8×10−4)

0.170 M in HNO2 (Ka=4.6×10−4) and 9.00×10−2 M in HNO3

0.180 M in HCHO2 (Ka=1.8×10−4) and 0.225 M in HC2H3O2 (Ka=1.8×10−5)

4.50×10−2 M in acetic acid (Ka=1.8×10−5) and 4.50×10−2 M in hydrocyanic acid (Ka=4.9×10−10)

MISSED THIS? Read Section
17.6 (Pages 745-753).
Find the pH of each mixture of acids.
0.115 M in HBr and 0.105 M in HCHO2 (Ka = 1.8 x 10-4)
Express your answer to two decimal places.
|Π| ΑΣΦ 3
?
pH = 0.92
Submit Previous Answers Request Answer
X Incorrect; Try Again; 3 attempts remaining
Part B
0.170 M in HNO2 (Ka = 4.6 x 10-4) and 9.00x10-2 M in HNO3
Express your answer to two decimal places.
12| ΑΣΦ
?
pH =
Submit
Request Answer
Part C
0.180 M in HCHO₂ (K₁ = 1.8 x 10-4) and 0.225 M in HC₂H3O2 (K₁ = 1.8 × 10-5)
Express your answer to two decimal places.
ID| ΑΣΦ
?
pH =
Submit
Request Answer
Part D
4.50x10-² M in acetic acid (K₁ = 1.8 x 10-5) and 4.50x10-2 M in hydrocyanic acid (K₁ = 4.9 × 10-¹0)
Express your answer to two decimal places.
IVE ΑΣΦ
?
Transcribed Image Text:MISSED THIS? Read Section 17.6 (Pages 745-753). Find the pH of each mixture of acids. 0.115 M in HBr and 0.105 M in HCHO2 (Ka = 1.8 x 10-4) Express your answer to two decimal places. |Π| ΑΣΦ 3 ? pH = 0.92 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B 0.170 M in HNO2 (Ka = 4.6 x 10-4) and 9.00x10-2 M in HNO3 Express your answer to two decimal places. 12| ΑΣΦ ? pH = Submit Request Answer Part C 0.180 M in HCHO₂ (K₁ = 1.8 x 10-4) and 0.225 M in HC₂H3O2 (K₁ = 1.8 × 10-5) Express your answer to two decimal places. ID| ΑΣΦ ? pH = Submit Request Answer Part D 4.50x10-² M in acetic acid (K₁ = 1.8 x 10-5) and 4.50x10-2 M in hydrocyanic acid (K₁ = 4.9 × 10-¹0) Express your answer to two decimal places. IVE ΑΣΦ ?
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