Heat of Dilution
Chemistry ⇒ Thermochemistry and Energetics
Heat of Dilution starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Heat of Dilution.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A 1 M solution of HCl is diluted to 0.1 M. If the molar heat of dilution is -1.7 kJ/mol, how much heat is released when 0.2 mol HCl is diluted?
A solution of KNO3 absorbs heat when diluted. Is the heat of dilution positive or negative?
A student adds 100 mL of water to 100 mL of 2 M NaOH solution. If the molar heat of dilution is -2.0 kJ/mol, how much heat is released?
A student observes that the temperature of a solution increases upon dilution. What can be inferred about the heat of dilution?
Calculate the heat evolved when 0.5 mol of HCl is diluted from 2 M to 1 M, given that the molar heat of dilution for this process is -1.5 kJ/mol.
Calculate the total heat change when 2 mol of NaCl is diluted from 3 M to 0.5 M, given the molar heat of dilution is -0.8 kJ/mol.
Describe how you would experimentally determine the heat of dilution for a salt solution.
Describe what happens to the heat of dilution as the concentration of a solution approaches zero.
Explain the difference between heat of solution and heat of dilution.
Explain why the heat of dilution approaches zero as the solution becomes very dilute.
Explain why the heat of dilution for non-electrolytes is generally small.
Explain why the heat of dilution for strong acids like HCl is large when diluted from high concentrations.
If the heat of dilution for a salt solution is negative, what does this indicate about the process?
If the heat of dilution for a solution is -1.2 kJ/mol, what does the negative sign indicate?
What is meant by the term 'heat of dilution' in thermochemistry?
What is the main reason for the heat change observed during dilution of an electrolyte solution?
What is the sign of the heat of dilution when the process absorbs heat from the surroundings?
When a concentrated aqueous solution of H2SO4 is diluted, the process is highly exothermic. What safety precaution should be taken?
A chemist dilutes 250 mL of 4 M H2SO4 to 1 L. The molar heat of dilution for this process is -3.0 kJ/mol. Calculate the total heat change during this dilution.
A student claims that the heat of dilution for a solution is always zero if the solute is a non-electrolyte. Critically evaluate this statement.
