Chemistry - Complete s-block Question with Solution | TestHub
ChemistryComplete s-blockMiscellaneous/MixedMedium2 minQB
ChemistryMediummultiple choice
In which of the following pair of compounds, first is more soluble than second compound in aqueous solution?
Options:(select one or more)
Answer:
A, C, D
Solution:
(A) AgF > AgBr: AgF is more soluble because F⁻ is smaller and AgF has more ionic character, while AgBr has higher covalent character and is less soluble.
(B) NaHCO₃ > KHCO₃: Incorrect. KHCO₃ is more soluble than NaHCO₃ due to larger size of K⁺ and better lattice weakening.
(C) MgSO₄ > BaSO₄: Correct. Solubility of sulphates decreases down the group due to higher lattice energy, so BaSO₄ is sparingly soluble.
(D) BeF₂ > CaF₂: Correct. BeF₂ has more covalent character and lower lattice energy compared to CaF₂, making it more soluble.
Correct Answer: (A), (C), (D)
Stream:JEESubject:ChemistryTopic:Complete s-blockSubtopic:Miscellaneous/Mixed
⏱ 2mℹ️ Source: QB
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