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Chemistry

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Yessenia Bashirian

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Cards in this guide (17)
What does equilibrium mean

Total amounts of products and reactants are not changing.-- Apex

If the pH value of a solution is measured at 13 the solution is

base

Which of the following is a strong acid

HCI (Hydrochloric acid)

What is meant by law of equilibrium

Law of equilibrium - The principle that (at chemical equilibrium) in a reversible reaction the ratio of the rate of the forward reaction to the rate of the reverse reaction is a constant for that reaction.

What is the PH of a 1.0x10 to the negative fourth power M solution of KOH

-log(1.0 X 10^-4 M KOH)

= 4

14 - 4

= 10 pH KOH

----------------

How does increasing the gas pressure increase the reaction rate

It increases the number of collisions.

What would happen if the equilibrium of a weak acid dissociation reaction were upset

The reaction would shift to balance the change

When hydrogen and oxygen combine and form water is water is the product or reactant

The Water is the Product. The Hydrogen and Oxygen are the Reactants.

Do hydrogen and oxygen react with water

No. Hydrogen and oxygen react with each other to form water.

Which reaction represents an unbalanced neutralization reaction

HNO3 + NaOH NaNO3 + H2O

What is a property of basic solutions but not acidic solutions

The pH is under 7.

Which one of the following is an example of a strong acid

Hydrochloric acid -APEX;)

How are the concentration of the reactants and reaction rate related

The formula is:
r = k(T) x [A] x [B] where [A] and [B] are the concentrations of reactants and r the reaction rate.

Which of the following is a weak base NH3 KOH LiOH or NaOH

Ammonia solution is a weak base.

Which of the following tends to increase the rate of a chemical reaction

Increasing the temperature of the reactants can increase the rate of the chemical reaction.

How does increasing pressure affect the reaction rate

For chemical reactions of gases increasing pressure increase the reaction rate.

What of the following is a characteristic of a weak acid

It does not dissociate completely in water

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