Chapter 11

Question 0

Gay- Lussac’s Law of Combining Volumes of Gases

Answer 0

At constant temperature and pressure conditions the volume of gaseous reactants and products can be expressed in ratios of small whole numbers.

Question 1

Gay-Lussac

4

Answer 1

• Early 1800’s
• Studied relationships of volumes of gases in chemical reaction.
• Kept pressure and temp constant
• noticed volumes of gases in reactions occur in specific ratios

Question 2

Amedeo Avogadro

4

Answer 2

• 6.022x10^23
• 1811
• 2L of Hydrogen + 1L of oxygen= 2 L of H2O vapor
• Explained that gases are made up of more than one particle.

Question 3

Avagadro’s Law

Answer 3

Equal volumes of gases under the same temperature and pressure condition will contain equal number of particles.

Question 4

Standard Molar Volume of a Gas

Answer 4

22. 41410 L

22. 4L=1 mole

Question 5

Ideal Gas Law

Answer 5

The mathematical relationship of pressure, volume, temperature, and the number of moles of a gas.

Question 6

Ideal gas constant

Answer 6

R in the T=PV/nT

.0821L atm/ mol K

Question 7

Graham’s Law of Effusion

Answer 7

States that the rates of effusion of gases at the same temp and pressure are inversely proportional to the square roots of their molar masses.

Question 8

Effusion

Answer 8

Movement of a gas through a tiny opening

Question 9

Diffusion

Answer 9

Spontaneous mixing of gases due to random motion.

Effusion and diffusion depend on kinetic energy of a gas.

Question 10

Equations

Answer 10

Density
D=MP/RT

R=PV/nT

Va/Vb=root of Mb/Ma

Molar Mass
M=mRT/PV