Question
Explain the relationship between basicity and structure of amines.

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A colorless substance ' $A$ ' $\left( C _6 H _7 N\right)$ is sparingly soluble in water and gives a water-soluble compound ' B ' on treating with a mineral acid. On reacting with CHCl 3 and alcoholic potash ' A ' produces an obnoxious smell due to the formation of compound ' C '. The reaction of ' A ' with benzene sulphonyl chloride gives compound ' D ' which is soluble in alkali. With $NaNO _2$ and HCl , ' A ' forms compound ' E ' which reacts with phenol in alkaline medium to give an orange dye ' $F$ '. Identify compounds ' $A$ ' to ' $F$ '.
Describe graphically the experimental method of measuring the conductivity of electrolyte solutions (ionic solution).
For the decomposition of azoisopropane to hexane and nitrogen at 543 K , the following data is obtained :
$t( sec )$$P$ (mm of Hg )
035.0
36054.0
72063.0

Calculate the rate constant.
The conductivity of sodium chloride at 298 K has been determined at different concentration and the results are given below :
Concentration/M0.0010.0100.0200.0500.100
$10^2 \times \kappa / S m ^{-1}$1.23711.8523.1555.53106.74
Calculate $\Lambda_{ m }$ for all concentrations and draw a plot between $\Lambda_{ m }$ and $c^{1 / 2}$. Find the value of $\Lambda_{ m }{ }^{\circ}$.
Two elements A and B form compounds having formula AB2 and AB4. When dissolved in 20 g of benzene $\left( C _6 H _6\right), 1 g$ of $AB _2$ lowers the freezing point by 2.3 K whereas 1.0 g of AB4 lowers it by 1.3 K. The molar depression constant for benzene is 5.1 K kg mol-1. Calculate atomic masses of A and B.
Answer the following questions:
Give reasons:
  1. d-block elements exhibit more oxidation states than f-block elements.
  2. Orange solution of potassium dichromate turns yellow on adding sodium hydroxide to it.
  3. Zirconium (Z = 40) and Hafnium (Z = 72) have almost similar atomic radii.
Describe the reactions of carboxylic acids in which C-OH bond is broken.
The experimental data for decomposition of N2O5
$\left[2 N_2 O _5 \rightarrow 4 NO _2+ O _2\right]$
in gas phase at 318 K are given below :
t/s$10^{-2} \times\left[ N _2 O _5\right] / mol L ^{-1}$
01.63
4001.36
8001.14
12000.93
16000.78
20000.64
24000.53
28000.43
32000.35

(i) Plot [N2O5] against t.
(ii) Find the half-life period for the reaction.
(iii) Draw a graph between log[N2O5] and t.
(iv) What is the rate law?
(v) Calculate the rate constant.
(iv) Calculate the half-life period from k and compare it with (ii).
Explain the energy distribution curve of gaseous molecules and also discuss the effect of temperature on it.
  1. Account for the following:
  1. Mn2O7 is acidic whereas MnO is basic.
  2. Though copper has completely filled d-orbital (d10) yet it is considered as a transition metal.
  3. Actinoids show wide range of oxidation states.
  1. Write the preparation of potassium permanganate from pyrolusite ore (MnO2).