Q34.The Ksp for bismuth sulphide Bi2S3 is 1 . 08 × 10-73. The solubility of Bi2S3 in molL-1 at 298 K is (1) 1 . 0 × 10-15 (2) 2 . 7 × 10-12 (3) 3 . 2 × 10-10 (4) 4 . 2 × 10-8
What This Question Tests
This problem requires applying Hess's Law to calculate the enthalpy change of a reaction using given enthalpies of combustion for reactants and products.
Concepts Tested
Formulas Used
ΔH_reaction = ΣΔH_products - ΣΔH_reactants (from combustion data)
📚 NCERT Sections This Tests
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1.27 If the solubility product of CuS is 6 × 10–16, calculate the maximum molarity of CuS in aqueous solution.
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1.35 Henry’s law constant for the molality of methane in benzene at 298 K is 4.27 × 105 mm Hg. Calculate the solubility of methane in benzene at 298 K under 760 mm Hg.
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3.23 The rate constant for the decomposition of hydrocarbons is 2.418 × 10–5s–1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of pre-exponential factor.
📋 Question Details
- Chapter
- Thermodynamics & Thermochemistry
- Topic
- Enthalpy of Reaction (Hess's Law)
- Year
- 2022
- Shift
- 25 Jun Shift 2
- Q Number
- Q34
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 6: Thermodynamics
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