NEET 2026 Chemistry Concentration Terms Multiple Correct Question
Identify the correct statements:
(A) The molality of 2.5 g of ethanoic acid (Molar mass: 60 g mol⁻¹) in 75 g of benzene solution is 0.556 m.
(B) The molarity of a solution containing 5 g of NaOH (molar mass: 40 g mol⁻¹) in 450 mL of solution is 0.278 M at 298 K.
(C) Aquatic species are more comfortable in cold water.
(D) The solubility of gas increases with decrease in pressure.
(E) For a binary mixture of A and B, the number of moles of A and B are nₐ and nᵦ respectively. The mole fraction of B will be xᵦ = nᵦ / (nₐ + nᵦ).
Choose the correct answer from the options given below:
A, B and C only
A and B only
A and C only
A, D and E only
Correct Answer
Detailed Explanation
Statements A, B, and C are correct based on calculations and principles of solubility and molality. Statement D is incorrect as solubility decreases with pressure decrease, and E is a correct formula for mole fraction.
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