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PRS Question from Lecture 12-5-11 and 12-7-11

# PRS Question from Lecture 12-5-11 and 12-7-11 - PV = nRT R...

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PRS Question presented in lecture 12-5-11 1) Consider the following reaction: 2 Li (s) + 2 HCl (aq) → 2 LiCl(aq) + H 2 (g) What volume of H 2 gas (in L) would be formed if 1.51 g of Li (molar mass: 6.941 g/mol) was reacted with excess HCl, measured at 23°C and 1.50 atm? Provide answer to 2 decimal places. R = 0.08206 L atm/mol-K Answer: 1.77 L PRS Question presented in lecture 12-7-11 1) A gas at temperature 112°C occupies a volume of 1.5 L. What volume (in L) does the same gas occupy at 87°C, assuming no change in pressure? Report answer to 1 decimal place.
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Unformatted text preview: PV = nRT, R = 0.08206 L-atm/mol-K 2) Consider the following reaction: 2 CO (g) + O 2 (g) → 2 CO 2 (g) If 0.25 moles of CO and 0.18 moles of O 2 are reacted in a 3.2 L container at 27°C, what is the total pressure in the container after the reaction has gone as far as possible? Report answer to 1 decimal place in atmospheres. R = 0.08206 L-atm/mol-K, Temp in K = Temp in C + 273. Answers: 1) 1.4 L 2) 2.3 atm...
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