Thermodynamics

Step 1: Define Initial and Equilibrium Concentrations Let the initial concentration of be 1 mol L (since 1 mole is placed in a 1L flask). At equilibrium, let x be the concentration of formed. Since the reaction is: The equilibrium concentrations will be: - -

Step 2: Apply the Equilibrium Constant Expression The equilibrium constant for the reaction is given by: Substituting the values:

Step 3: Solve for Rearranging the equation:

Step 4: Conclusion Thus, the equilibrium concentration of is 0.975 mol L , so the correct answer is option (1).

To solve this, we need to use the given equilibrium constants and manipulate them based on the stoichiometry of the reactions. We will combine the reactions and equilibrium constants as needed.

Step 1: Write the given reactions and their equilibrium constants We are given the following two reactions: 1. 2. Now, the reaction we need to analyze is:

Step 2: Manipulate the given reactions to match the desired reaction We can manipulate the first reaction to match the desired reaction. To do this, divide the entire equation by 2: Since dividing the entire reaction by 2 will square the equilibrium constant, we now have:

Step 3: Calculate the equilibrium constant for the desired reaction Now, the desired reaction is , and since this is just the first reaction without the extra factor of , the equilibrium constant for the desired reaction is . That is: Thus, the equilibrium constant for the reaction is:

The work done on an ideal gas during isothermal compression can be calculated using the formula . Given the initial and final pressures and using the ideal gas law to find volumes, calculate the work done in the process.

Step 1: Understanding the Reaction Between and
- The reaction between beryllium chloride ( ) and lithium aluminium hydride ( ) results in the reduction of to .
- The complete reaction can be written as:

Step 2: Identifying the Products
- The major products are:
- (beryllium hydride),
- (lithium chloride),
- (aluminium chloride).

Step 3: Verifying the Correct Option
- The correct option should contain , , and .
- This matches option (2). Thus, the correct answer is .

Step 1: Understanding the Composition of the Given Compounds
- Baking Soda ( ): Contains the bicarbonate ion ( ).
- Caustic Soda ( ): Contains the hydroxide ion ( ).
- Washing Soda ( ): Contains the carbonate ion ( ).

Step 2: Identifying the Correct Anion Sequence
- Baking soda:
- Caustic soda:
- Washing soda: Thus, the correct sequence of anions is , which corresponds to option (4).