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For the reaction H2(g)+I2(g)⇌2HI (g) at 721 K
value of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value of KpKp under the same conditions will be
  • a)
    0.05
  • b)
    50
  • c)
    0.1
  • d)
    25 RT
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium...
The equilibrium reaction is H2​(g)+I2​(g)⇔2HI(g).
The relationship between Kp​ and Kc​ is Kp​=Kc​(RT)Δn.
For the equilibrium reaction, Δn=2−(1+1)=0.
Hence, Kp​=Kc​=50.
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For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium...
Given information:

- Reaction: H2(g) + I2(g) ⇌ 2HI(g)
- Temperature: 721 K
- Equilibrium constant (Kc) at 721 K: 50 (given)
- Equilibrium concentrations: [H2] = [I2] = 0.5 M

To find: Value of equilibrium constant (Kp) under the same conditions

Step-by-step solution:

1. Definition of Kp: Kp is the equilibrium constant expressed in terms of partial pressures of the gases in the reaction mixture.

2. Relationship between Kc and Kp: For any gaseous reaction, the equilibrium constant Kp is related to the equilibrium constant Kc by the following equation:

Kp = Kc(RT)Δn

where R is the gas constant (0.0821 L atm mol^-1 K^-1), T is the temperature in Kelvin, and Δn is the difference between the total number of moles of gaseous products and the total number of moles of gaseous reactants. In this case, Δn = (2-2) = 0.

3. Calculation of Kp: Substituting the given values in the above equation, we get:

Kp = Kc(RT)Δn
Kp = 50(0.0821 x 721)^0
Kp = 50(59.32)
Kp = 2966

4. Answer: Therefore, the value of equilibrium constant (Kp) under the same conditions is 2966, which corresponds to option B.
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For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium...
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For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value ofKpKpunder the same conditions will bea)0.05b)50c)0.1d)25 RTCorrect answer is option 'B'. Can you explain this answer?
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For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value ofKpKpunder the same conditions will bea)0.05b)50c)0.1d)25 RTCorrect answer is option 'B'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value ofKpKpunder the same conditions will bea)0.05b)50c)0.1d)25 RTCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the reactionH2(g)+I2(g)⇌2HI (g) at 721 Kvalue of equilibrium constant is 50, when molar concentration of both hydrogen and iodine is 0.5 M at equilibrium value ofKpKpunder the same conditions will bea)0.05b)50c)0.1d)25 RTCorrect answer is option 'B'. Can you explain this answer?.
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