List of top Chemistry Questions on Thermodynamics asked in Telangana State Engineering Agriculture & Medical CET

At T(K) 10 L of an ideal gas was expanded to 12 L against a pressure of 2 atm irreversibly. What is the work done by the gas?
Identify the correct statements:
I. Energy of an isolated system is constant
II. In a closed system, exchange of both energy and matter is possible
III. Enthalpy is extensive
At 298K, if the standard Gibbs energy change \(\Delta_r G^\circ\) of a reaction is - 115 kJ, the value of \(\log_{10} K_p\) will be (\(R = 8.314 \text{ J K}^{-1}\text{mol}^{-1}\))
At 300 K, 3.0 moles of an ideal gas at 3.0 atm pressure is compressed isothermally to one half of its volume by an external pressure of 6.0 atm. The work done (in kJ) is:
12 g of an element reacts with 32 g of oxygen. What is the equivalent weight of the element?
An open vessel containing air was heated from 27°C to 727°C. Some air was expelled. What is the fraction of air remaining in the vessel? (Assume air as an ideal gas)
The anions present in baking soda, caustic soda, and washing soda respectively are
The products formed in the reaction of \( BeCl_2 \) with \( LiAlH_4 \) are
The equilibrium constants for the following two reactions are given below at T(K): \[ 2A(g) \leftrightarrow B(g) + C(g), \quad K = 16 \quad \text{and} \quad 2B(g) \leftrightarrow D(g), \quad K = 25. \] What is the value of the equilibrium constant (K) for the reaction given below at T(K)? \[ \frac{1}{2} A(g) \leftrightarrow B(g) \]
Observe the following two statements: I. For an isolated system, \( \Delta U = 0 \); \( q = 0 \) II. For a closed system, \( \Delta U = 0 \); \( q \neq 0 \) The correct answer is
For the reaction at \( T(K) \), \( A_2(g) \rightleftharpoons B_2(g) \), \( K_c \) for the reaction at \( T(K) \) is 39.0. In a closed 1L flask, one mole of \( A_2(g) \) was heated to \( T(K) \). What is the concentration of \( B_2(g) \) at equilibrium (in mol L\(^{-1}\))?
Observe the following two statements: I. For an isolated system, \( \Delta U = 0 \); \( q = 0 \) II. For a closed system, \( \Delta U = 0 \); \( q \neq 0 \) The correct answer is