MediumChemistry1
+4 / -1
Q.9 A gas absorbs 200J of heat and expands against the external pressure of 1.5 atm from a volume of 0.5 litre to 1.0 litre, Calculate the change in internal energy -
A
124 J
B
224 J
C
114 J
D
154 J
Explanation
W = – P delta V = – 1.5 (1– 0.5) = – 0.75 atm-litre = – 0.75 × 101 Joule. q = 200 J. q = delta E – W. 200 = delta E – (– 0.75 × 101). delta E = 124.25 Joule.
Previous
Q.8 The ratio of sigma to pi bonds in mesitylene is
NextQ.10 Heat of reaction for C6H12O6 (s) + 6O2 (g) -> 6CO2 (g) + 6H2O (g) at consta
More from Some Basics Concepts of Chemistry
Medium
Q.45 A blue solution of copper sulphate becomes darker when treated with excess of ammonia. This is
MediumQ.44 The order of stability of complexes of ion Cu+2, Ni+2, Mn+2 and Fe+2 decreases in the order -
MediumQ.43 Peptide bond group is characteristic of-
MediumQ.42 Which of the following is not a reducing sugar ?
MediumQ.41 Gabriel phthalimide reaction is used to prepare -
MediumQ.40 In hypobromite reaction of amide, carbonyl carbon atom is lost as -
Practice Chemistry1 Exams
Full-length mock tests with detailed analytics, rank, and percentile.
Browse Exams