Thermochemistry Questions

The standard enthalpies of formation of CO2(g), H2O(l) and glucose(s) at 250C are -400 kJ/mol, -300 kJ/mol & -1300 kJ/mol respectively. The standard enthalpy of combustion per gram of glucose at 2...

Heat of neutralisation of CsOH with all strong acid is 13.4 kcal mol-1. The heat released on neutralisation of CsOH with HF (weak acid) is 16.4 kcal mol-1. ∆H of ionisation of HF is...

The enthalpy of combustion of propane (C3H8) gas in terms of given data is : Bond energy (kJ/mol) εC-H εO=O εC=O εO-H εC-C +x1 +x2 +x3 +x4 +x5Resonance energy of CO2 is - zkJ/...

Enthalpy change for the reaction,4H(g) → 2H2 (g) is - 869.6 kJ The dissociation energy of H - H bond is

The species which by definition has ZERO standard molar enthalpy of formation at 298 K is

The bond energy (in kcal mol-1) of a C - C single bond is approximately

The standard enthalpy of formation (ᐃfHo) at 298 K for methane, CH4(g), is - 74.8 kJ mol–1. The additional information required to determine the average energy for C - H bond formation would b...

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol-1 respectively. The enthalpy of formation of carbon monoxide per mole is

The enthalpy change for a reaction does not depend upon

The ᐃHfo for CO2(g), CO(g) and H2O(g) are - 395.5, - 110.5 and - 241.8 kJ mol-1 respectively. The standard enthalpy enthaly change (in kJ) for the reaction CO2(g) + H2(g) → CO(g) + H2O(g) ...

Consider the following reactions : C (s) + O2 (g) → CO2 (g) + x kJ CO (g) + O2 (g) → CO2 (g) + y kJThe heat of formation of CO (g) is :...

Given that :-CH4(g) + 300 kJ → C(g) + 4H(g)C2H6(g) + 620 kJ → 2C(g) + 6H(g)The value of C - C bond energy is :-

In which of the following the hydration energy is higher than the lattice energy :-

Which of the following statement is incorrect about internal energy ?

Which of the following reaction represent the bond energy :-

On heating vapours of S8(g) decomposes to S2(g). Due to this the vander waal′s constant ′b′

When 1.0 g of oxalic acid is burnt in a bomb calorimeter whose heat capacity is 8.75 kJ/K, the temperature increases by 0.312 K. The enthalpy of combustion of oxalic acid at 27oC is :-...

CsF(S) → Cs+(aq) + F-(aq) ᐃH = - 40 kJ mol- If lattic energy of CsF is 750 kJ mol- . Then the summation of heat of hydration of Cs+ and F- ion is :-...

A + BA gives iodoform test. ′B′ is heated with excess of H-I. then ′C′ is obtained A and C are :-...

Match the transformations in column I with appropriate options in column II...