Gas Stoichiometry STP = standard temperature and pressure T = 0 o C = 273 K, P = 1 atm at STP the volume of 1 mole of gas = 22.42 L (22.42 L/mole) Ex.

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Presentation transcript:

Gas Stoichiometry

STP = standard temperature and pressure T = 0 o C = 273 K, P = 1 atm at STP the volume of 1 mole of gas = L (22.42 L/mole) Ex - Find the number of moles of 2.0 L of CO 2 at STP.

Ex - The industrial synthesis of nitric acid involves the reaction: 3 NO 2(g) + H 2 O (l) --> 2 HNO 3(aq) + NO (g) If 450. L of NO 2 at 5.00 atm and 295 K react, how many moles of nitric acid are formed?

Ex - What is the density of CO 2 gas at 745 mm Hg and 65 o C?

Dalton's Law of Partial Pressures P T = P 1 + P 2 +P Mole Fraction (X) = n 1 /n total it also equals P 1 /P T

If a gas is collected over water, the evaporated water contributes to the total pressure. To correct for this, subtract the vapor pressure of water from the total pressure of the collected gas.

A student prepares a sample of hydrogen gas by electrolyzing water at 25 o C. She collects 152 mL of H 2 at a total pressure of 758 mm Hg. Given that the vapor pressure of water at 25 o C is mm Hg, calculate a. the partial pressure of hydrogen b. the number of moles of hydrogen collected

Take the notes quiz M0R2Qm95dnMyN1E6MQ