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Gas Stoichiometry

Gas Stoichiometry . Non-Standard Conditions. Nonstandard Conditions. Gas volume changes dramatically when pressure or temperature change. Key: The mole-mol calculation must take place at STP. Doing the Calculations. Given a volume of gas at other than STP?

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Gas Stoichiometry

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  1. Gas Stoichiometry Non-Standard Conditions

  2. Nonstandard Conditions • Gas volume changes dramatically when pressure or temperature change. • Key: The mole-mol calculation must take place at STP.

  3. Doing the Calculations • Given a volume of gas at other than STP? • Convert to STP before doing the mole-mole calculation. • Finding the volume of gas at other than STP? • Do the mole-mole step, then convert the volume to stated conditions

  4. Problem 1 • What volume of chlorine gas measured at 18.5oC and 98.0 kPa can be produced by the electrolysis if 62.3 g of NaCl to give sodium metal and chlorine gas? • Answer: 13.2 L

  5. Problem • 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO2 that is formed at 1 atm pressure and 37oC? • MW sucrose = 342.3 g/mol C12H22O11 + 12O2 12CO2 + 11H2O A. 22.4 L B. 10.4 L C. 1.78 L D. 0.545 L E. 0.148 L

  6. Problem • 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO2 that is formed at 1 atm pressure and 37oC? • MW sucrose = 342.3 g/mol C12H22O11 + 12O2 12CO2 + 11H2O A. 22.4 L B. 10.4 L C. 1.78 L D. 0.545 L E. 0.148 L

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