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2 Chemistry Gas Unit

Chemistry Gas Unit Grade 11 sides 2 and 3

QuestionAnswer
Boyle’s Law -temperature and number of moles held constant - inverse relationship between the pressure and the volume of a gas -As the volume increases, the pressure decreases and vice versa P1V1 = P2V2
Charles' Law -pressure and number of moles of gas is held constant -direct relationship between the volume of a gas and its temperature - KEEP THE TEMPERATURE IN KELVIN -As temperature increases, volume increases V1/T1= V2/T2
Gay-Lussac’s Law - volume and number of moles of a gas are held constant, direct relationship between the pressure and temperature of gas -KEEP THE TEMPERATURE IN KELVIN -pressure increases, temperature increases if volume is held constant. -P1/T1= P2/T2
Combined Gas Law Temperature should be kept in Kelvin (P1/V1)/T1=(P2/V2)/T2
PV=nRT P = pressure (in kPa or atm) V = volume (in L) n = number of moles T = temperature (in K) R = universal gas constant (diff units depending on pressure you use)
Universal Gas Constant R: 1)8.314( L*kPa/mol * k)