Chemistry - Chemical Equilibrium Question with Solution | TestHub
ChemistryChemical EquilibriumProblems involving KcHard2 minQB
ChemistryHardnumerical
The equilibrium constant for the tetramerization of acetaldehyde to metaldehyde in aqueous solution, 4CH3CHO ⇌ (CH3CHO)4, is 6.25 × 1010 M-3. If a 1 M solution of metaldehyde were taken, what would be the equilibrium concentration of acetaldehyde, in milligram per litre?
Answer:
88.00
Solution:
K = [(CH3CHO)4]/[CH3CHO]4 = 6.25 × 1010 Metaldehyde is almost undissociated, so [(CH3CHO)4] ≈ 1 M
[CH3CHO]4 = 1/(6.25 × 1010) = 1.6 × 10-11
[CH3CHO] = 2 × 10-3 M
Mass = (2 × 10-3)(44) g/L = 0.088 g/L = 88 mg/L
Answer is 0088
Stream:JEESubject:ChemistryTopic:Chemical EquilibriumSubtopic:Problems involving Kc
⏱ 2mℹ️ Source: QB
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