A system is changed from a initial state toa final state by a manner such that `Delta H = q`. If the change from the initial state to the final state were made by a different.path,' would `DeltaH` be the same as that for the first path? Would q? Give reason.

A system can go from state A to state B in two different processes 1 and 2. If the change in internal energy in two cases are Delta U_(1) and Delta U_(2) , respectively, then

In a certain electronic transition in Hydrogen atom from an initial state to a final state the difference of orbit radius is 8 times the first Bohr radius . Which transition does not satisfy the given condition?

For an ideal gas, consider only p-V work in going from an initial state X to the final state Z. The final state Z can be reached by either of the two paths shown in the figure. Which of the following choice(s) is (are) correct ?

The internal energy change when a system goes from state P to Q is 30 kJ*mol^(-1) . If the system goes from P to Q by a reversible path and returns to state P by an irreversible path, what would be the net change in internal energy-

Identify whether the enthalpy of the initial state is greater than, less than or equal to that of the final state in the following changes: solid to liquid, vopur to solid, liquid to vapour.

An ideal gas is compressed from state (P_(1), V_(1), T) to state (P_(2), V_(2), T) isothermally. What is the change in the internal energy of the gas? Answer with reason.

Electron in a hydrogen atom undergoes transition from n_1 to n_2 , where n_1 and n_2 are the principal quantum numbers of two given states. According to Bohr's theory , if the time period of the electron in the initial state be eight times that in the final state , the possible values of n_1 and n_2 will be, respectively