Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryHess's Law of Constant Heat SummationMedium2 minQB
ChemistryMediumnumerical
Use the shown energy diagram to find ΔH₁. Enter the repeated digit sum until a single digit remains.
Answer:
2.00
Solution:
Traverse from CuO(s) to Cu²⁺(g)+O²⁻(g), reversing negative downward arrows as required. ΔH₁=155+339+249+745+1960-141+790=4097 kJ/mol. The requested response is repeated digit sum: 4+0+9+7=20, then 2+0=2. Printed physical energy 4097 is retained separately from OMR answer 2.
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Hess's Law of Constant Heat Summation
⏱ 2mℹ️ Source: QB
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