Chemistry · 2025
JEE Main · 22 January 2025, Shift 2 · Q55
Density of 3 M NaCl solution is 1.25 g / mL. The molality of the solution is:
Density of $\displaystyle 3$ M NaCl solution is $\displaystyle 1.25 \mathrm{~g} / \mathrm{mL}$. The molality of the solution is :
Official answer
From NTA’s final answer key for this paper.
(4)
2.$\displaystyle 79$ m
More from Solutions
- Elements P and Q form two types of non-volatile, non-ionizable compounds PQ and PQ_2. When 1 g of PQ is dissolved in 50 g of solvent 'A', Δ T_b was…2026
- Solution A is prepared by dissolving 1 g of a protein (molar mass =50000 g mol^-1 ) in 0.5 L of water at 300 K. Its osmotic pressure is x bar.…2026
- X Y is the membrane/partition between two chambers 1 and 2 containing sugar solutions of concentration c_1 and c_2(c_1>c_2) mol L^-1. For the reverse…2025
- ' W ' g of a non-volatile electrolyte solid solute of molar mass ' M ' g mol^-1 when dissolved in 100 mL water, decreases vapour pressure of water…2026
- Which of the following binary mixture does not show the behaviour of minimum boiling azeotropes?2025
- When 1 g each of compounds AB and AB_2 are dissolved in 15 g of water separately, they increased the boiling point of water by 2.7 K and 1.5 K…2025
- ' x ' g of NaCl is added to water in a beaker with a lid. The temperature of the system is raised from 1°C to 25°C. Which out of the following plots,…2025
- 20 g hemoglobin in a 1 L aqueous solution ( A ) at 300 K is separated from pure water by semi permeable membrane. At equilibrium the height of…2026
JEE Main 2025 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.