Question # 1

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Such reaction which can be made proceed in either direction depending upon the condition:

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simple reaction

reversible reaction

irreversible reaction

chain reaction

When the numbers of moles of both sides are equal in a reaction, then the unit of K_c will be:

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No unit

mol^-2 dm⁶

mol dm³

mol^-2dm

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

If Qc < Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

Equilibrium constant has no unit when number of moles of reactants and products are:

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same

Different

Both a and b

None of these

When the magnitude of Kc is very small in indicates.

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Equilibrium will never establish

All reactants will converted to products.

Reaction will go to completion

The amount of products is negligible

In a chemical reaction, the substance that combine are called.

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Reactant

Products

Mass

Material

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

When CaCO_3,.is heated in an open flask, it decomposes to form calcium oxides and .

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O₂

CO

CO₂

CO₃

A reverse reaction is that.

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Which proceed from left to high

In which reactants reacts to form products

Which slow down gradually

Which speed up gradually

For which reaction Kf is the rate constant?

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Forward reaction

Backward reaction

Upward reaction

Downward reaction

The value of equilibrium constant (Kc) depends only on:

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temperature

Pressure

concentration

density

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