Change in enthalpy for reaction,
2H2O2(l) 2H2O(l) + O2(g)
if the heat of formation of H2O2(l) and H2O(l) are -188 and -286 kJ/mol respectively is
(a) -196 kJ/mol (b) + 196 kJ/mol
(c) +948 kJ/mol (d) -948 kJ/mol
If 50 calorie are added to a system and system does work of 30 calorie on surroundings, the change in internal energy of system is:
(a) 20 cal (b) 50 cal
(c) 40 cal (d) 30 cal
Which statements are correct?
(a) is called Clausius-Clapeyron equation
(b) is called Trouton's rule
(c) Entropy is a measure of unavailable energy, i.e.,
unavailable energy = entropy x temperature
(d) All of the above
CH4(g) + Cl2(g)CH3Cl(g) + HCl(g)
has =-25 K cal
From the given data, what is the bond enthalpy of Cl-Cl bond?
1. 70 K cal 2. 80 K cal
3. 67.75 K cal 4. 57.85 K cal
Consider the reaction
N2(g) + 3H2(g)2NH3(g) carried out at constant temperature and pressure. If H and E are enthalpy change and internal energy change respectively, which of the following expression is True?