Chemistry Modules 11-13

Name That Term

100

The energy change that accompanies a reaction.

What is change in enthalpy?

200

force per unit area

What is pressure?

300

A measure of the disorder that exists in any system.

What is entropy?

400

Activation energy

What is the energy necessary to start a chemical reaction?

500

Any quantity that depends solely on the final destination, not in the way we get to that destination.

What is a state function?

Anything Goes

100

Specific Heat

What is the amount of heat necessary to raise the temperature of 1g of a substance by 1^oC?

200

Standard Conditions

What is room temperature (25^oC) and normal atmospheric pressure (1.00 atm)?

300

Energy cannot be created or destroyed. It can only change form.

What is the First Law of Thermodynamics?

400

The specific heat of water

What is 1.000 cal/g^oC or

4.184 J/g^oC

500

The number of joules to make one calorie

What is 4.184 joules?

Which Way Did It Go?

100

This happens to the solubility of gas with increasing pressure.

What is increase?

200

This happens to the freezing temperature of a liquid with added solutes.

What is decrease?

300

This happens to the boiling temperature of water with added solutes.

What is increase?

400

This happens to the pressure in a constant T closed gas system with increased volume.

What is P will decrease (Boyle's Law)?

500

What happens to the temperature in a constant P closed gas system with decreased volume?

What is T will decrease?

It's a Process

100

Slowly reacting a base of unknown concentration with an acid of known concentration (or vice versa) until just enough acid has been added to react with all the base allowing the determination of the unknown concentration?

What is titration?

200

Process that absorbs heat.

What is endothermic?

300

Process that generates heat

What is exothermic?

400

The type of reaction that produces a Negative delta H

What is exothermic?

500

The reaction that produces a Positive delta H

What is endothermic?

Don't Break the Laws!

100

The enthalpy of any element in its elemental form.

What is zero?

200

Dalton's Law of Partial Pressure

What is P_T = P₁ + P₂ + P₃ + ...?

300

Hess's Law

Equation 13.3

400

Combined Gas Law

P₁V₁/T₁ = P₂V₂/T₂

or

PV/T = constant

500

Which substance(s) have a delta H_f^o of zero?

NaOH(aq)     Na⁺(aq)     0₂(g)     0(g)     Cl₂(g)

What are O₂(g) and Cl₂(g)