enEnglishguગુજરાતી
JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties
Vapour pressure of pure benzene is \(119\, torr\) and that of toluene is \(37.0\, torr\) at the same temperature. Mole fraction of toluene in vapour phase which is in equilibrium with a solution of benzene and toluene having a mole fraction of toluene \(0.50\), will be
- A \(0.137\)
- B \(0.237\)
- C \(0.435\)
- D \(0.205\)
Answer & Solution
Correct Answer
(B) \(0.237\)
Step-by-step Solution
Detailed explanation
\({P_A}\, = \,P_A^o\, \times \,{x_A}\, = \) total pressure \(\times y_A\) \({P_B}\, = \,P_B^o\, \times {x_B}\, = \) total pressure \(\times y_B\) where \(x\) and \(y\) represents mole fraction in liquid and vapour phase repsectively.…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- At \(298.2\, \mathrm{~K}\) the relationship between enthalpy of bond dissociation (in \(\mathrm{kJ} \,\mathrm{mol}^{-1}\) ) for hydrogen \(\left(\mathrm{E}_{\mathrm{H}}\right)\) and its isotope, deuterium \(\left(\mathrm{E}_{\mathrm{D}}\right)\), is best described by:JEE Mains 2021 Hard
- \(20\,mL\) of \(0.1\,M\,NH _{4} OH\) is mixed with \(40\,mL\) of \(0.05\,M\,HCl\). The \(pH\) of the mixture is nearest to.(Given: \(K _{ b }\left( NH _{4} OH \right)=1 \times 10^{-5}, \log 2=0.30\),\(\log 3=0.48, \log 5=0.69, \log 7=0.84\),\(\log 11=1.04)\)JEE Mains 2022 Medium
- The absolute value of the electron gain enthalpy of halogens satisfiesJEE Mains 2021 Medium
- The electronic configuration of Einsteinium is _______. (Given atomic number of Einsteinium \(=99\) )JEE Mains 2024 Medium
- The increasing order of the following compounds towards \(HCN\) addition is
JEE Mains 2020 Medium - The major product of the following chemical reaction is \({image}\)
JEE Mains 2021 Easy
More PYQs from JEE Mains
- Match List\(-I\) with List\(-II\) :
Choose the most appropriate answer from the options given below :List\(-I\) (Metal Ion) List\(-II\) (Group in Qualitative analysis) \((a)\) \({Mn}^{2+}\) \((i)\) Group \(- III\) \((b)\) \({A} {s}^{3+}\) \((ii)\) Group \(- IIA\) \((c)\) \({Cu}^{2+}\) \((iii)\) Group \(- IV\) \((d)\) \({Al}^{3+}\) \((iv)\) Group \(- IIB\) JEE Mains 2021 Medium - Two sets \(A\) and \(B\) are as under: \(A = \{ \left( {a,b} \right) \in R \times R:\left| {a - 5} \right| < 1 \,\,and\,\,\left| {b - 5} \right| < 1\} \); \(B = \left\{ {\left( {a,b} \right) \in R \times R:4{{\left( {a - 6} \right)}^2} + 9{{\left( {b - 5} \right)}^2} \le 36} \right\}\) then : . . . . .JEE Mains 2018 Hard
- Given below are two statements :
Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation.
Statement (II) : An azeotropic mixture cannot be separated by fractional distillation.
In the light of the above statements, choose the correct answer from the options given below :JEE Mains 2026 Medium - An object is placed beyond the centre of curvature \({C}\) of the given concave mirror. If the distance of the object is \({d}_{1}\) from \({C}\) and the distance of the image formed is \({d}_{2}\) from \({C}\), the radius of curvature of this mirror isJEE Mains 2021 Hard
- Let for \(n =1,2, \ldots \ldots, 50, S _{ a }\) be the sum of the infinite geometric progression whose first term is \(n ^{2}\) and whose common ratio is \(\frac{1}{(n+1)^{2}}\). Then the value of \(\frac{1}{26}+\sum\limits_{n=1}^{50}\left(S_{n}+\frac{2}{n+1}-n-1\right)\) is equal toJEE Mains 2022 Hard
- If a satellite orbiting the Earth is 9 times closer to the Earth than the Moon, what is the time period of rotation of the satellite? Given rotational time period of Moon \(=27\) days and gravitational attraction between the satellite and the moon is neglected.JEE Mains 2025 Medium