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Gas Stoichiometry Non-Standard Conditions. Nonstandard Conditions Gas volume changes dramatically when pressure or temperature change. Gas volume changes.

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Presentation on theme: "Gas Stoichiometry Non-Standard Conditions. Nonstandard Conditions Gas volume changes dramatically when pressure or temperature change. Gas volume changes."— Presentation transcript:

1 Gas Stoichiometry Non-Standard Conditions

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

3 Doing the Calculations Given a volume of gas at other than STP? 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? 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 18.5 o C and 98.0 kPa can be produced by the electrolysis if 62.3 g of NaCl to give sodium metal and chlorine gas? What volume of chlorine gas measured at 18.5 o C 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 Answer: 13.2 L

5 Problem 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO 2 that is formed at 1 atm pressure and 37 o C? 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO 2 that is formed at 1 atm pressure and 37 o C? MW sucrose = g/mol MW sucrose = g/mol C 12 H 22 O O 2 12CO H 2 O A L B L C L D L E L

6 Problem 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO 2 that is formed at 1 atm pressure and 37 o C? 2.00 g of sucrose is combusted in excess oxygen. What is the volume of dry CO 2 that is formed at 1 atm pressure and 37 o C? MW sucrose = g/mol MW sucrose = g/mol C 12 H 22 O O 2 12CO H 2 O A L B L C L D L E L


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