Gas Laws and Heat Equations

Flashcards covering gas laws, heat equations, phase changes, and particle energy.

Combined Gas Law

P1V1/T1 = P2V2/T2 relates pressure, volume, and temperature.

Dalton's Law of Partial Pressures

P = P1 + P2 + P3 + … states that the total pressure is the sum of individual pressures.

Ideal Gas Law

PV = nRT relates pressure, volume, number of moles, gas constant, and temperature.

Heat Transferred Equation

q = mcΔT calculates heat transfer based on mass, specific heat, and temperature change.

Heat of Vaporization and Fusion

q = n(Hf or Hv) calculates heat during phase changes (fusion or vaporization)

1 atm in torr and mm Hg

1 atm = 760 torr = 760 mm Hg

Exothermic Reaction

Releases energy; products have lower energy than reactants.

Endothermic Reaction

Absorbs energy; products have higher energy than reactants.

Temperature and Kinetic Energy

Higher temperature means faster particles and more kinetic energy.

SOLID

Low Particle energy

LIQUID

Medium Particle Energy

GAS

High Particle Energy

what does Q stand for?

Heat transferred (J)

What does C stand for?

Specific heat capacity (J/g (*C)

What does Delta T stand for

change in temperature

Specific heat formula

q=mcAT

1 atm=

14.7 psi & 101.3 kPa

Gay-lussacs law

P1/T1=P2/T2

Boyle’s

P1V1=P2V2

Ideal Gas Law

PV=nRT

melting and boiling difference

melting: 1st plateau & S—L

Building: 2nd plateau & L—G