A certain reaction is 50 complete in 20 minutes at 300 K and the same reaction is 50 complete in 5 minutes at 350 K. Calculate the activation energy if it is a first order reaction. Given: \[ R = 8.314 \, \text{J K}^{-1} \, \text{mol}^{-1}, \quad \log 4 = 0.602 \]
The elements of the 3d transition series are given as: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. Answer the following:
(a) Copper has an exceptionally positive \( E^\circ_{\text{M}^{2+}/\text{M}} \) value, why?
Which element is a strong reducing agent in +2 oxidation state and why?
Zn\(^{2+}\) salts are colourless. Why?
(A) Draw the structure of the major monohalo product for each of the following reactions: \vspace{5pt} (a) \includegraphics[]{26a.png}
Chlorobenzene to biphenyl
Propene to 1-Iodopropane
2-Bromobutane to but-2-ene
(a) Arrange the following compounds in increasing order of their boiling point: \[ \text{(CH}_3\text{)}_2\text{NH, CH}_3\text{CH}_2\text{NH}_2, \text{CH}_3\text{CH}_2\text{OH} \]
Aromatic primary amines cannot be prepared by Gabriel Phthalimide synthesis.
Amides are less basic than amines.
(a) What is the difference between native protein and denatured protein?
Which one of the following is a disaccharide? \[ \text{Glucose, Lactose, Amylose, Fructose} \]
(i) What is a rate determining step?
(ii) Define complex reaction.
What is the effect of temperature on the rate constant of a reaction?
The conversion of molecule X to Y follows second-order kinetics. If the concentration of X is increased 3 times, how will it affect the rate of formation of Y?
Br\(_2\)/CS\(_2\)
Conc. HNO\(_3\)
Why phenol does not undergo protonation readily?