
The dissolution of in a large volume of water is endothermic to the extent of . For the reaction, is . The heat of solution of anhydrous in large quantity of water will be:
Answer
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Hint: Dissolution is defined as the process where a substance (solute) in any phases (solid, liquid or gaseous) dissolves in a suitable solvent to form a solution. Dissolution is differ from solubility (solubility is the maximum amount of solute that can dissolve in a solution at a given temperature).
Complete step by step solution:
In the question it given that the dissolution of in a large volume of water is endothermic to the extent of and for the reaction, is .
Now, we have heat and change in enthalpy is and , let’s calculate the heat of solution which is asked in the question.
We know heat of solution is equal to the sum of change in enthalpy and heat. Therefore we have a required formula to calculate heat of solution.
Heat of solution Change in enthalpy Heat
Heat of solution
Where represents heat of solution, is change in enthalpy and represents the heat.
By putting the values of known quantities in the above formula to calculate the heat of solution.
Heat of solution
On solving, we get heat of solution
Heat of solution
Note:
The dissolution process can be considered to occur in three steps. In the first step separate particles of the solute from each other, in the second step separate particles of the solute from each other and in the last step combine separated solute and solvent particles to make a solution.Enthalpy is a property of the thermodynamic system; enthalpy is the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.
Complete step by step solution:
In the question it given that the dissolution of
Now, we have heat and change in enthalpy is
We know heat of solution is equal to the sum of change in enthalpy and heat. Therefore we have a required formula to calculate heat of solution.
Heat of solution
Heat of solution
Where
By putting the values of known quantities in the above formula to calculate the heat of solution.
Heat of solution
On solving, we get heat of solution
Heat of solution
Note:
The dissolution process can be considered to occur in three steps. In the first step separate particles of the solute from each other, in the second step separate particles of the solute from each other and in the last step combine separated solute and solvent particles to make a solution.Enthalpy is a property of the thermodynamic system; enthalpy is the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.
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