1
AIPMT 2003
+4
-1
Formation of solution from two components can be considered as
(i) Pure solvent $$\to$$ separated solvent molecules, $$\Delta$$H1
(ii) Pure solute $$\to$$ separated solute molecules, $$\Delta$$H2
(iii) Separated solvent and solute molecules $$\to$$ solution, $$\Delta$$H3
Solution so formed will be ideal if
A
$$\Delta$$Hsoln = $$\Delta$$H1 + $$\Delta$$H2 + $$\Delta$$H3
B
$$\Delta$$Hsoln = $$\Delta$$H1 + $$\Delta$$H2 $$-$$ $$\Delta$$H3
C
$$\Delta$$Hsoln = $$\Delta$$H1 $$-$$ $$\Delta$$H2 $$-$$ $$\Delta$$H3
D
$$\Delta$$Hsoln = $$\Delta$$H3 $$-$$ $$\Delta$$H1 $$-$$ $$\Delta$$H2
2
AIPMT 2003
+4
-1
The molar heat capacity of water at constant pressure, C, is 75 J K$$-$$1 mol$$-$$1. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand, the increase in temperature of water is
A
1.2 K
B
2.4 K
C
4.8 K
D
6.6 K
3
AIPMT 2003
+4
-1
What is the entropy change (in J K$$-$$1 mol$$-$$1) when one mole of ice is converted into water at 0oC? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol$$-$$1 at 0oC).
A
20.13
B
2.013
C
2.198
D
21.98
4
AIPMT 2002
+4
-1
Unit of entropy is
A
J K$$-$$1 mol$$-$$1
B
J mol$$-$$1
C
J$$-$$1 K$$-$$1 mol$$-$$1
D
J K mol$$-$$1
EXAM MAP
Medical
NEET