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If a is the fraction of HI dissociated at equilibrium in the reaction 2HI=H2 I2 starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are a. 2 2a b. 2 c. 1 a d. 2-a?
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If a is the fraction of HI dissociated at equilibrium in the reaction ...
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If a is the fraction of HI dissociated at equilibrium in the reaction ...
Explanation:

Given reaction: 2HI ⇌ H2 + I2

Initial moles of HI: 2 moles

Let x be the moles of HI dissociated at equilibrium

At equilibrium:
- Moles of HI remaining = 2 - x
- Moles of H2 formed = x
- Moles of I2 formed = x

Equilibrium constant (Kc):
Kc = [H2][I2]/[HI]^2

Given that a is the fraction of HI dissociated at equilibrium:
a = x/2

At equilibrium:
- Moles of HI = 2 - a
- Moles of H2 = a
- Moles of I2 = a

Therefore, the total number of moles of reactants and products at equilibrium:
2 - a + a + a = 2 + a

So, the correct option is: 2 + a
This explanation provides a clear understanding of how to determine the total number of moles of reactants and products at equilibrium in the given reaction.
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Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: Rate of reaction is a measure of change in concentration of reactant with respect to time.Reason: Rate of reaction is a measure of change in concentration of product with respect to time.

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If a is the fraction of HI dissociated at equilibrium in the reaction 2HI=H2 I2 starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are a. 2 2a b. 2 c. 1 a d. 2-a?
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If a is the fraction of HI dissociated at equilibrium in the reaction 2HI=H2 I2 starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are a. 2 2a b. 2 c. 1 a d. 2-a? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about If a is the fraction of HI dissociated at equilibrium in the reaction 2HI=H2 I2 starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are a. 2 2a b. 2 c. 1 a d. 2-a? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a is the fraction of HI dissociated at equilibrium in the reaction 2HI=H2 I2 starting with the 2 moles of HI, then the total number of moles of reactants and products at equilibrium are a. 2 2a b. 2 c. 1 a d. 2-a?.
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