JEE Advanced · Chemistry · 19. Surface Chemistry
Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is
- A \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15} \mathrm{~N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}\)
- B \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{11} \mathrm{OSO}_3^{-} \mathrm{Na}^{+}\)
- C \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_6 \mathrm{COO}^{-} \mathrm{Na}^{+}\)
- D \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{11} \mathrm{~N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{15} \mathrm{~N}^{+}\left(\mathrm{CH}_3\right)_3 \mathrm{Br}^{-}\)
Step-by-step Solution
Detailed explanation
Sodium Hexadecyl trimethylammonium bromide (CTAB) dodecylsulphate
(SDS)
CMC \((\mathrm{mm})>-10\)
1
(SDS)
CMC \((\mathrm{mm})>-10\)
1
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
- Paragraph:
When a metal rod \(M\) is dipped into an aqueous colourless concentrated solution of compound \(\mathrm{N}\), the solution turns light blue. Addition of aqueous \(\mathrm{NaCl}\) to the blue solution gives a white precipitate \(\mathrm{O}\). Addition of aqueous \(\mathrm{NH}_3\) dissolves \(\mathrm{O}\) and gives an intense blue solution.
Question:
The metal \(\operatorname{rod} M\) isJEE Advanced 2011 Medium - The spin only magnetic moment value (in Bohr magneton units) of \(\mathrm{Cr}(\mathrm{CO})_6\) isJEE Advanced 2009 Easy
- The correct acidity order of the following is
JEE Advanced 2009 Easy - Statement I Molecules that are not superimposable on their mirror images are chiral.
Statement II All chiral molecules have chiral centres.JEE Advanced 2007 Easy - of molal urea solution (density at ) is mixed with of a solution containing of urea. Both the solutions were prepared in the same solvent. The osmotic pressure (in torr) of the resulting at is
[Use : Molar mass of urea ; gas constant, ;
Assume,JEE Advanced 2023 Easy - The number of water molecule(s) directly bonded to the metal centre in \(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\) isJEE Advanced 2009 Medium
More PYQs from JEE Advanced
- Match the complexes in Column I with their properties listed in Column II. Indicates your answer by darkening the appropriate bubbles of \(4 \times 4\) matrix given in the ORS.
JEE Advanced 2007 Easy - Let be a continuous odd function, which vanishes exactly at one point and Suppose that for all and for all If then the value of isJEE Advanced 2015 Medium
- Find the time constant for the given R C circuits in correct order.
\(R_1=1 \Omega, R_2=2 \Omega, C_1=4 \mu \mathrm{F}, C_2=2 \mu \mathrm{F}\)JEE Advanced 2006 Easy - Let \(S_1=\{(i, j, k): i, j, k \in\{1,2, \ldots, 10\}\}\)
\(S_2=\{(i, j): 1 \leq i < j+2 \leq 10, i, j\) \(\in\{1,2, \ldots, 10\}\} \)
\(S_3=\{(i, j, k, l): 1 \leq i < j < k < l, i,\) \(j, k, l \in\{1,2, \ldots . ., 10\}\}\)
and \(S_4=\{(i, j, k, l): i, j, k\) and \(l\) are distint elements in \(\{1,2, \ldots, 10\}\}\) If the total number of elements in the set \(S_r\) is \(n_r, r=1,2,3,4\) then which of the following statements is (are) TRUE?JEE Advanced 2021 Medium - Let be the reflection of a point with respect to the plane given by
where are real parameters and are the unit vectors along the three positive coordinate axes. If the position vectors of and are and respectively, then which of the following is/are TRUE?JEE Advanced 2022 Easy - Let where and are real number, and is the identity matrix. If is the minimum of the set { and is the minimum of the set then the value of isJEE Advanced 2019 Hard