JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
In the sulphur estimation, 0.20 g of a pure organic compound gave 0.40 g of barium sulphate. The percentage of sulphur in the compound is ______ \(\times 10^{-1} \%\).
(Molar mass : \(\mathrm{O}=16, \mathrm{~S}=32, \mathrm{Ba}=137\) in \(\mathrm{g} \mathrm{mol}^{-1}\) )
- A 250
- B 275
- C 300
- D 325
Answer & Solution
Correct Answer
(B) 275
Step-by-step Solution
Detailed explanation
\begin{array}{ll}\text { Organic Compound } \longrightarrow & \mathrm{BaSO}_4 \\ 0.20 \mathrm{gm} & 0.40 \mathrm{gm} \\ & \frac{0.40}{233} \mathrm{~mol}\left(\mathrm{BaSO}_4\right) \\ & \frac{0.40}{233} \mathrm{~mol} \text { (Sulphur) } \\ & \frac{0.40}{233} \times 32…
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
- Given below are two statements :
Statement (I) : On hydrolysis, oligo peptides give rise to fewer number of \(\alpha\)-amino acids while proteins give rise to a large number of \(\beta\)-amino acids.
Statement (II) : Natural proteins are denatured by acids which convert the water soluble form of fibrous proteins to their water insoluble form.
In the light of the above statements, choose the most appropriate answer from the options given below :JEE Mains 2025 Medium - Consider the following aqueous solutions.
I. 2.2 g Glucose in 125 mL of solution.
II. 1.9 g Calcium chloride in 250 mL of solution.
III. 9.0 g Urea in 500 mL of solution.
IV. 20.5 g Aluminium sulphate in 750 mL of solution.
The correct increasing order of boiling point of these solutions will be:
[Given: Molar mass in \(g mol^{-1}\): \(H=1, C=12, N=14, O=16, Cl=35.5, Ca=40, Al=27, S=32\)]JEE Mains 2026 Hard - The following reaction occurs in the Blast furnance where iron ore is reduced to iron metal \(\mathrm{Fe}_2 \mathrm{O}_{3(\mathrm{~s})}+3 \mathrm{CO}_{(\mathrm{g})} \rightleftharpoons \mathrm{Fe}_{(1)}+3 \mathrm{CO}_{2(\mathrm{~g})}\) Using the Le-chatelier's principle, predict which one of the following will not disturb the equilibrium.JEE Mains 2024 Medium
- Which of the following statements are NOT true about the periodic table?
A. The properties of elements are function of atomic weights.
B. The properties of elements are function of atomic numbers.
C. Elements having similar outer electronic configurations are arranged in same period.
D. An element's location reflects the quantum numbers of the last filled orbital.
E. The number of elements in a period is same as the number of atomic orbitals available in energy level that is being filled.
Choose the correct answer from the options given below:JEE Mains 2025 Medium - Butane reacts with oxygen to produce carbon dioxide and water following the equation given below
\(\mathrm{C}_4 \mathrm{H}_{10}(\mathrm{~g})+\frac{13}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow 4 \mathrm{CO}_2(\mathrm{~g})+5 \mathrm{H}_2 \mathrm{O}(\mathrm{l})\)
If 174.0 kg of butane is mixed with 320.0 kg of \(\mathrm{O}_2\), the volume of water formed in litres is ________.(Nearest integer)
[Given : (a) Molar mass of \(\mathrm{C}, \mathrm{H}, \mathrm{O}\) are 12, 1, \(16 \mathrm{~g} \mathrm{~mol}^{-1}\) respectively, (b) Density of water \(\left.=1 \mathrm{~g} \mathrm{~mL}^{-1}\right]\)JEE Mains 2025 Medium - Given : \(E^o_{Cr^{3+}/Cr} =-0.74\, V,\,\) \(E^o_{MnO_4^-/Mn^{2+}} =1.51 \,V\) \(E^o_{Cr_2O_7^{2-}/Cr^3+} =1.33\,V:\) \(E^o_{Cl/Cl^-} =1.36\,V\) Based on the data given above, strongest oxidising agent will be :JEE Mains 2013 Hard
More PYQs from JEE Mains
- What is the energy (in J atom\(^{-1}\)) required for the following process?
\(Li^{2+}(g) \rightarrow Li^{3+}(g) + e^-\)
(Take the ionization energy for the H atom in the ground state as \(2.18 \times 10^{-18}\) J atom\(^{-1}\))JEE Mains 2026 Medium - Suppose for a differentiable function \(h, h(0)=0\), \(\mathrm{h}(1)=1\) and \(\mathrm{h}^{\prime}(0)=\mathrm{h}^{\prime}(1)=2\). If \(\mathrm{g}(\mathrm{x})=\mathrm{h}\left(\mathrm{e}^{\mathrm{x}}\right) \mathrm{e}^{\mathrm{h}(\mathrm{x})}\), then \(g^{\prime}(0)\) is equal to :JEE Mains 2024 Medium
- The figure represents the momentum time \((p-t)\) curve for a particle moving along an axis under the influence of the force. Identify the regions on the graph where the magnitude of the force is maximum and minimum respectively ? If \(\left(t_3-t_2\right) < t_1\)
JEE Mains 2023 Medium - A particle of charge \(q\) and mass \(m\) is projected from origin with an initial velocity \(\vec{v} = \left(\dfrac{v_0}{\sqrt{2}}\hat{x} + \dfrac{v_0}{\sqrt{2}}\hat{y}\right)\). There exists a uniform magnetic field \(\vec{B} = B_0 \hat{z}\) and a space varying electric field \(\vec{E} = E_0 e^{-\lambda x}\hat{x}\) within the region \(0 \leq x \leq L\). After travelling a distance such that \(x\)-coordinate has changed from \(x=0\) to \(x=L\), the change in the kinetic energy is _______.JEE Mains 2026 Hard
- Let \(A\left[\begin{array}{cc}1 & 2 \\ -1 & 4\end{array}\right] .\) If \(A^{-1}=\alpha I+\beta A, \alpha, \beta \in R, I\) is a \(2 \times 2\) identity matrix, then \(4(\alpha-\beta)\) is equal to:JEE Mains 2021 Medium
- A point on the straight line, \(3x + 5y = 15\) which is equidistant from the coordinate, axes will lie only inJEE Mains 2019 Hard