This preview shows page 1. Sign up to view the full content.
Unformatted text preview: b) What is the relative change in volume of the system (in other words, what is V 2 /V 1 )? Ideal gas law: P 1 V 1 = nRT = P 2 V 2 since n and T are constant Therefore P 1 V 1 = P 2 V 2 and V 2 /V 1 = P 1 /P 2 = 1 atm / 2 atm = 0.5 c) What is E in Joules? E = C v T = 0 because T = 0 d) What is H in Joules? H = C p T = 0 because T = 0 e) What is (PV) in Joules? (PV) = (nRT) = nR (T) = 0 because T = 0 f) What is w in Joules? w =  p dV =  nRT dV = nRT dV = nRT ln (V 2 /V 1 ) V V w =  (0.1 mol) (8.314 J mol1 K1 ) (25+273.15) K (ln 0.5) = +172 J g) What is q in Joules? Which way is heat transferred (to the system or out of the system)? q = E w = 0 172 J = 172 J. Negative value means heat out of the system. You have to show your work. No partial credit for unsubstantiated answers!...
View
Full
Document
This note was uploaded on 02/09/2012 for the course THERMO 306 taught by Professor Berthuiame during the Spring '11 term at Rutgers.
 Spring '11
 Berthuiame

Click to edit the document details