Chem 171 F09 Q5 NIE CO2 Key

Chem 171 F09 Q5 NIE CO2 Key - 1. Chem 171 Quiz 5 Version A...

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Chem 171 Quiz 5 Version A (5 pts each) (Show work, unit, sig fig for full credit) Name Sec 1. A volume of a 0.1 molar solution of lead nitrate is mixed with the same volume of a 0.1 molar sodium chromate solution. Does a reaction occur? If a reaction occurs, write a balanced net ionic equation showing all phases. Which ions are spectator ions? Yes Pb 2+ (aq) + CrO 4 2- (aq) Æ PbCrO 4 (s) Na + and NO 3 - are spectator ions 2. The following questions refer to the experiment entitled “Determining the Molar Volume of Carbon Dioxide”. R = 0.0821 L atm / K mol. PV = nRT What is the purpose of this experiment? What is dry ice? What is the hazard associated with dry ice? What would happen to the molar volume of CO 2 if you stopper the flask while solid CO 2 was still present in the flask? Why|? What is an ideal gas? Purpose: To determine the volume of one mole of carbon dioxide gas at STP Dry Ice: Solid CO 2 Hazard: Frostbite Stopper the flask: The molar volume of CO 2 will go down because the calculated mass of CO 2 will be higher, the number of moles will be higher, the molar volume will be smaller since the V will be divided by the larger number of moles Ideal gas: Ideal gas is a gas in which the attractive and repulsive forces are negligible,
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This note was uploaded on 03/04/2012 for the course CHEM 171 taught by Professor Several during the Fall '08 term at Rutgers.

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Chem 171 F09 Q5 NIE CO2 Key - 1. Chem 171 Quiz 5 Version A...

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