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Chemistry

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Itzel Brown

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Cards in this guide (13)
What is thermodynamics

the study of the movement of energy and heat.

or

Thermodynamics is the branch of physics concerned with the conversion of different energy forms.

•DeltaG (rxn) = DeltaG (pdts) - DeltaDG (rcts) •DeltaG°(rxn) = -R T ln K •

Which of the following is a strong acid

HCI (Hydrochloric acid)

An increase in temperature will cause the rate of a chemical reaction to

increased temperture causes rate or reaction to increase.

What is the equation for reaction rate

For a reaction whose slowest step is

mX + nY ----> aXY

rate = k * [X]m * [Y]n

where k is the rate constant; brackets represent concentrations; m and n are exponents on the concentrations of X and Y, respectively

Which equation is an expression of the rate law

Rate = k[A]m[B]n

What does it mean if keq1

I suspect it could be " k eq 1" , or "k =1".

What is specific heat a measure of

The amount of energy it takes to change the temperature of a substance by a certain amount.

How much energy it takes to heat a substance ~APEX

What does a negative change in entropy indicate

The system has become more ordered.

Which of the following Ka values represent the weakest acid

Ka= 1.62 x 10-12

What increases the chance of reaction when two molecules collide

increasing the concentration in the molecue

A solid fuel designed for a rocket has air pocket inside what is the danger of this

The rocket might explode from the added pressure when the combustion reaction hits the air.

What does it mean if Keq is less than 1

Reactants are favored over products in the reaction.

Which of the following is the best thermal insulator APEX

Air

(Explanation): water has a high specific heat capacity, but it can boil. stone (😂) also is a good thermal insulator, but it can get really hot. Metal is a very good thermal conductor, so it is definitely not that. Therefore, air is the best (its also really hard to boil).

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