The equilibrium constant for the reaction N,O,(g) = 2NO,(2) is 6.10 x 10' at 25'C. Calculate the value of K for this reaction: NO,(g) = 1/2N,0,(g) (A) 327 (B) 164 (C) 12.8 (D) 3.05 × 10

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Chapter13: Fundamental Equilibrium Concepts
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Problem 12E: Show that the complete chemical equation, the total ionic equation, and the net ionic equation for...
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The equilibrium constant for the reaction
N,O,(2) = 2NO,(8)
is 6.10 x 10 ' at 25'C. Calculate the value of K for this
reaction:
NO,(g) = 1/2N,O4(g)
(A) 327
(B) 164
(C) 12.8
(D) 3.05 × 10 ³
How many moles of HCOON must be added to 1.0 L of
0.10 M HCOOH to prepare a buffer solution with a pH of
3.4? (HCOOH K, = 2 × 10 “)
(A) 0.01
(B) 0.05
(C) 0.1
(D) 0.2
What is the percent ionization of a 0.10 M solution of formic acid at 25°C? Formic acid, HCOOH, has a
Ka value of 1.9 x 104 at 25°C.
(A) 0.19%
(B) 1.4%
(C) 4.4%
(D) 14%
Transcribed Image Text:The equilibrium constant for the reaction N,O,(2) = 2NO,(8) is 6.10 x 10 ' at 25'C. Calculate the value of K for this reaction: NO,(g) = 1/2N,O4(g) (A) 327 (B) 164 (C) 12.8 (D) 3.05 × 10 ³ How many moles of HCOON must be added to 1.0 L of 0.10 M HCOOH to prepare a buffer solution with a pH of 3.4? (HCOOH K, = 2 × 10 “) (A) 0.01 (B) 0.05 (C) 0.1 (D) 0.2 What is the percent ionization of a 0.10 M solution of formic acid at 25°C? Formic acid, HCOOH, has a Ka value of 1.9 x 104 at 25°C. (A) 0.19% (B) 1.4% (C) 4.4% (D) 14%
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