Question # 1

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

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temperature

Pressure

concentration

density

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 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

A complete reaction is one is which.

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All the reactants convert into products.

All the reactants do not convert into products.

Half reactants convert into products.

Only 10% reactants convert into products.

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

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

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O₂

CO

CO₂

CO₃

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

Active mass is expressed as:

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{ }

[ ]

( )

l l

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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1

2

3

4

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