Hydrogen sulfide decomposes according to the following reaction, for which 104 at 1400 K: Kc = 2.20 x 2H₂S (g) ( 2H₂ (g) + S₂ (g) If 25.6 mol of H₂S is placed in a 3.00-L container, what is the equilibrium concentration of H₂?

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Chapter1: Chemical Foundations
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Hydrogen sulfide decomposes according to the following reaction, for which
10-4 at 1400 K:
Kc = 2.20 x
2H₂S (9) → 2H₂ (g) + S₂ (g)
If 25.6 mol of H₂S is placed in a 3.00-L container, what is the equilibrium concentration of H₂?
Submit your work for partial credits at the end of the exam. (optional) You will receive the
full credit if you got correct answer on multiple choices without submission.
a. 0.318
Ob. 2.23E-8
O c. 8.27E-10
O d. 0.159
Transcribed Image Text:Hydrogen sulfide decomposes according to the following reaction, for which 10-4 at 1400 K: Kc = 2.20 x 2H₂S (9) → 2H₂ (g) + S₂ (g) If 25.6 mol of H₂S is placed in a 3.00-L container, what is the equilibrium concentration of H₂? Submit your work for partial credits at the end of the exam. (optional) You will receive the full credit if you got correct answer on multiple choices without submission. a. 0.318 Ob. 2.23E-8 O c. 8.27E-10 O d. 0.159
stion 12
yet
wered
ts out of
0
lag
stion
Nicotinic acid (also known as niacin or vitamin B3) is water soluble and dissociates to nicotinate
and hydronium ion in water.
Calculate the pH of 0.21 M nicotinate. The K₂ for nicotinic acid is 1.40 x 10-5.
Submit your work to the last part of this exam for partial credits. (Optional) You will get full
credits if you got correct answer on multiple choices without work submission.
O a. 9.091
Ob. 6.909
O c. 8.059
O d. 4.909
Oe. 2.764
Transcribed Image Text:stion 12 yet wered ts out of 0 lag stion Nicotinic acid (also known as niacin or vitamin B3) is water soluble and dissociates to nicotinate and hydronium ion in water. Calculate the pH of 0.21 M nicotinate. The K₂ for nicotinic acid is 1.40 x 10-5. Submit your work to the last part of this exam for partial credits. (Optional) You will get full credits if you got correct answer on multiple choices without work submission. O a. 9.091 Ob. 6.909 O c. 8.059 O d. 4.909 Oe. 2.764
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