Summary of Gas Laws

Question 1

Describe Boyle’s Law and provide formula:

Answer 1

• Inverse relationship.
• When pressure increases volume decreases, and if pressure decreases, volume increases.
• Formula: P1V1 = P2V2

Question 2

Describe Charles’s Law and provide formula:

Answer 2

• Direct relationship.
• When volume increases temperature increases, and if volume decreases temperature decreases.
• Formula: V1T1=V2/T2

Question 3

Describe Gay Lusaac’s Law and provide formula:

Answer 3

• Direct relationship.
• When pressure increases temperature increases, and if pressure decreases temperature decreases.
• Formula: P1/T1=P2/T2

Question 4

Describe Avogadro’s Law and provide formula:

Answer 4

• “Equal volumes of different gases at the same temperature and pressure have the same number of molecules (or atoms if the gas is monatomic).”
• That the volume of any given gas must be proportional to the number of moles of molecules present.
• Formula: V1/n1 = V2/n2