CHM 2045C Module Six Sample Exam Part D Answers

Module 5 SamplePretest

Module Six Part D Gas Laws 5 points

State:

Boyle’s Law (In words) Section 12.2 p 550-552

The volume of a gas is inversely proportional to the pressure when the temperature remains constant.

V₁P₁=V₂P₂

Charles Law (in words) Section 12.2 p 552-3

The volume of a gas is directly proportional to the Kelvin temperature if the pressure remains constant.

V₁ = V₂

T₁ T₂

Dalton’s Law of Partial pressures (in words) Section 12.5 p564-566

The total pressure of a gaseous mixture is equal to the sum of the individual pressure of each gas.

P_total = P₁ + P₂ + P₃ + …

Combined Gas Law Equation (write only the equation): Section 12.3 p 554-555

V₁P₁ = V₂P₂

T₁ T₂

Ideal Gas Equation (write only the equation): Section 12.3 p 557-558

PV = nRT

Graham’s Law of Effusion: Section 12.7 p571-573

The rate of effusion of a gas is inversely proportional to the square root of its molecular mass.

Rate of effusion of gas 1 ( molar mass of gas 2 ) ^½

---------------------------------- = ----------------------------

Rate of effusion of gas 2 ( molar mass of gas 1 ) ^½

Avogadro’s Hypothesis: Section 12.1 p 556-557

Equal volumes of gases under the same conditions of temperature and pressure have equal numbers of particles.

or

(The volume of a gas at a given temperature and pressure is directly proportional to the amount of gas in moles:

V proportional n at constant T and P )