Thermodynamics ...

For the reaction  : 

Which of the following are spontaneous?

One mole of an ideal monatomic gas undergoes a process described by the equation $PV^{3}$ = constant. The heat capacity of the gas during this process is:

A reaction A(g) +B(g) $\rightarrow$ C(g) +D(g). $\Delta H$= (-) ve is found to have positive entropy change. the reaction will be: 

The correct thermodynamic conditions for the spontaneous reaction at all temperatures is ______________________.

7.5 KJ heat is added to a closed system and its internal energy decreases by 12 KJ. So,______ of work is done ____ the system ,for a new process , if the work is zero, then____of heat is ______ for the same changes in state of system

An ideal monoatomic gas is taken through a process in which $d Q = 2 d U$ . The molar heat capacity of the gas for the process is

Correct desending order of deprotonation in the following compound:

$100g$ of water is heated from ${30}^{o}C$ to ${50}^{o}C$. Ignoring the slight expansion of water, the change in its internal energy is (Specific heat of water is $4200J$ ${kg}^{-1}$ ${K}^{-1}$)

If $\Delta G_{298}$ for reaction:
$2H_{2 (9, 1 atm)} + O_{2(g)(1atm)} \to 2H_2O(g)(1 atm)$
is $-240KJ$, what will be the $\Delta G_{298}$ for reaction
$H_2O_{(g, 0.2atm)} \to H_{2(g, 4atm)} + \dfrac{1}{2}O_{2(g, 0.9 atm)}$