Measuring Enthalpy Changes (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Convert 350 K to degrees Celsius.
Convert 350 K to degrees Celsius.
77°C
What is the specific heat capacity of water?
What is the specific heat capacity of water?
4.18 J g⁻¹ K⁻¹
In , what does represent?
In , what does represent?
Mass of surroundings changing temp
Why are experimental combustion values typically less exothermic than data book values?
Why are experimental combustion values typically less exothermic than data book values?
Heat loss to surroundings
A temperature rise of 5 K equals a rise of how many °C?
A temperature rise of 5 K equals a rise of how many °C?
5°C
What is the main advantage of the cooling curve method?
What is the main advantage of the cooling curve method?
Corrects for heat loss via extrapolation
What does the thermometer actually measure in enthalpy experiments?
What does the thermometer actually measure in enthalpy experiments?
Temperature change of surroundings
How should you describe an experimental of -500 kJ mol⁻¹ vs -720 kJ mol⁻¹ data book value?
How should you describe an experimental of -500 kJ mol⁻¹ vs -720 kJ mol⁻¹ data book value?
Less exothermic
Why are polystyrene foam cups used for solution reaction enthalpy experiments?
Why are polystyrene foam cups used for solution reaction enthalpy experiments?
Good insulation against heat loss