Question # 1

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

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

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

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Reactant

Products

Mass

Material

A dynamic equilibrium

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Reaction stops to proceed

Amounts of reactants and products are equal

Rate of forward and reverse reaction are equl

Reaction can no longer be reversed.

Which gas is used to prepare ammonia?

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N₂

O₂

Cl₂

S

The reaction in which the products can recombine to form reactants are called.

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Reversible reaction

Irreversible reaction

Decomposition

Addition

If Qc > Kc the reaction will be in

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Chemical equilibrium

Static equilibrium

Reverse reaction

Forward reaction

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

The reactions in which products can recombine to form reactants is called.

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Irreversible reactions

Reversible reactions

Direct reactions

Indirect reactions

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

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

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Dalton

Thomson

Haber

Waage

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

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