Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryEnthalpy of ReactionHard2 minQB
ChemistryHardnumerical
A solution of 4.0 g of an oxygen-carrying protein (molar mass = 80,000 g/mol) in 7.5 ml of solution shows a temperature rise of 0.02°C for complete oxygenation. Each mole of the protein binds 2 moles of oxygen. If the heat capacity of the solution is 4.0 J/K-ml, the amount of heat released per mole of oxygen bound (in kJ) is
Answer:
6.00
Solution:
Heat released q = 4.0 × 7.5 × 0.02 = 0.60 J. Moles of protein = 4.0/80000 = 5.0 × 10-5, so moles of O2 bound = 2 × 5.0 × 10-5 = 1.0 × 10-4. Heat per mole of O2 = 0.60 / 1.0 × 10-4 = 6000 J = 6 kJ. Answer: 6.
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction
⏱ 2mℹ️ Source: QB
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