Heat of Dilution
Chemistry ⇒ Thermochemistry and Energetics
Heat of Dilution starts at 11 and continues till grade 12.
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A student adds 50 mL of water to 50 mL of 2 M HCl and observes a temperature increase. What does this indicate about the heat of dilution for HCl?
Describe how the heat of dilution can affect the temperature of a solution during dilution.
Describe the difference between heat of solution and heat of dilution.
Describe the main reason why the heat of dilution for weak electrolytes is significant.
A solution of 0.5 M H2SO4 is diluted to 0.1 M. If the enthalpy change is -3 kJ per mole, what is the heat of dilution?
A solution of 1 M acetic acid is diluted to 0.1 M. The enthalpy change is +1.2 kJ per mole. Is the process endothermic or exothermic?
A student adds 50 mL of water to 50 mL of 2 M HCl and observes a temperature increase. What does this indicate about the heat of dilution for HCl?
If the enthalpy of a 2 M solution is -5 kJ and that of a 1 M solution is -7 kJ, what is the heat of dilution when diluting from 2 M to 1 M?
Which of the following best defines the heat of dilution? (1) The heat absorbed or evolved when a solute dissolves in a solvent (2) The heat change when a solution is diluted with more solvent (3) The heat change during a chemical reaction (4) The heat required to vaporize a liquid
Which of the following factors does NOT affect the heat of dilution? (1) Temperature (2) Pressure (3) Nature of solute and solvent (4) Color of the solution
Which of the following is a correct statement about the heat of dilution? (1) It is always positive (2) It is always negative (3) It can be positive or negative (4) It is always zero
Which of the following is most likely to have a significant heat of dilution? (1) NaCl (2) HCl (3) CH3COOH (4) KNO3
The heat of dilution for a solution is calculated as the difference in enthalpy between the ________ and ________ solutions.
The heat of dilution for a solution is zero when the solution is already at ________ dilution.
The heat of dilution is an important consideration in the preparation of ________ solutions in the laboratory.
The heat of dilution is generally greater for ________ electrolytes than for ________ electrolytes.
True or False: The heat of dilution can be both positive and negative.
True or False: The heat of dilution for a weak acid is generally greater than that for a strong acid.
True or False: The heat of dilution is a path function.
True or False: The heat of dilution is a state function.
