Question # 1

Guldberg and waage put forward law of mass action in:

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1860

1869

1870

1879

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

Active mass is expressed as:

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{ }

[ ]

( )

l l

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are

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mol^-2

dm³

mol²

mol dm^-1

Formation profess of Ammonia by the combination Hydrogen and Nitrogen was given by:

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Dalton

Thomson

Haber

Waage

When the rate of a the forward reaction takes place at the rate of reverse reaction the composition of the reaction mixture remains constant it is called.

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Chemical equilibrium

Dynamic equilibrium

Static equilibrium

All

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

For reactions having large Kc value, the reaction proceeds to:

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Completion

Equilibrium state

back ward

None of these

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

when a system is in equilibrium state or in dynamic equilibrium state.

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Reactants and product are equal

Forward reactions stops

Reverse reactions stops

Forward reaction rate and reverse reaction rate

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10th Class Chemistry Chapter 9 Chemical Equilibrium English Medium KPK Boards Online Mcqs MCQs With Answers

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