Chemical Equilibrium
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Concentrations of reactants and products at equilibrium remain unchanged if ?
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Concentration of any reactant or product is not changed
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Temperature of reaction is not changed
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Pressure or volume of the system is not changed
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All of the above are observed
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.
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- 2.
What is true about the equilibrium state?
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The forward reaction stops.
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The reverse reaction stops.
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Both forward and reverse reactions stops.
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Both forward and reverse reactions continue at the same rate.
Correct Answer
A. Both forward and reverse reactions continue at the same rate. -
- 3.
When a mixture of H2 and I2 is sealed in a flask and temperature is kept at 25o C? Which substance or substances will be present in the equilibrium mixture?
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H2 and I2
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H2 only
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H2 only
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H2, I2 and HI
Correct Answer
A. H2, I2 and HI -
- 4.
What are the units for?
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Mol.dm-3
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Mol2.dm6
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Dm3.mol-1
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No units
Correct Answer
A. No units -
- 5.
Which of the following reactions will not have any units for Kc?
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Option 1
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Option 2
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Option 3
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All of these
Correct Answer
A. All of these -
- 6.
Which of the following does not happen, when system is at equilibrium?
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Forward and reverse reaction stop.
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Forward and reverse reaction become equal.
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Concentration of reactant and product stop changing.
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Reaction continues to occur in both directions
Correct Answer
A. Forward and reverse reaction stop. -
- 7.
For which reaction, Kc has units of mol.dm-3?
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Option 1
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Option 2
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Option 3
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Option 4
Correct Answer
A. Option 3 -
- 8.
In irreversible reaction, equilibrium is?
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Established quickly
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Established slowly
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Never established
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Established when reaction stops.
Correct Answer
A. Never established -
- 9.
Active mass means?
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Total mass of reactants
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Total mass of products
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Total mass of reactants and products
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Mass of substance in mole per dm-3 in a dilute solution
Correct Answer
A. Mass of substance in mole per dm-3 in a dilute solution -
- 10.
For a reversible reaction, Which substance is product of the reaction?
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A
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B
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Both A and B
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C
Correct Answer
A. A -
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Current Version
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Mar 15, 2022Quiz Edited by
ProProfs Editorial Team -
Jan 12, 2021Quiz Created by
Zafar Iqbal
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