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Master Gas Laws: Understanding and Applying Gas Principles

Explore Boyle's, Charles' and Dalton's laws, gas pressure conversions, STP standards, and more. Enhance your knowledge of gas laws for ideal gases over normal temperature ranges.

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Master Gas Laws: Understanding and Applying Gas Principles

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  1. Gas Laws Boyle’s – PV at const Temp Charles’- V/T at const Pressure Combined – PV/T Ideal – PV=nRT Dalton’s – PT=P1 + P2 +… Graham’s –

  2. STP • Standard Temperature and Pressure • Standard temp is • 273 degrees Kelvin • 0 degrees Celsius • All gas laws use Kelvin temp • Convert Temp to Kelvin deg K = deg C + 273 • Can’t have negative volume or pressure • Absolute zero, lowest possible temp, zero KE • Gas Laws good for ideal gases over normal temp ranges

  3. Pressure • Standard Pressure • 1atm (exact) • 101.3 kPa • 760 mmHg (to three decimal places) • 760 torr (to three decimal places)

  4. Pressure conversions What pressure in kPa is 345 mmHg? 345 mmHg(converting) 101.3 kPa(converting to) 760 mmHg(converting from) Standards, 1 atm = 101.3 kPa = 760 mmHg = 760 torr 345 x 101.3 / 760 = 45.98 = 46.0 kPa

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