Write the cell reaction and calculate the e.m.f. of the following cell at 298 K: \[ \text{Sn}(s) \mid \text{Sn}^{2+} (\text{0.004 M}) \parallel \text{H}^+ (\text{0.02 M}) \mid \text{H}_2 (\text{1 Bar}) \mid \text{Pt}(s) \] (Given: \( E^\circ_{\text{Sn}^{2+}/\text{Sn}} = -0.14 \, \text{V}, E^\circ_{\text{H}^+/\text{H}_2} = 0.00 \, \text{V} \))
Write the IUPAC name of the product formed in the Reimer-Tiemann reaction.
Why phenol does not undergo protonation readily?
Conc. HNO\(_3\)
Br\(_2\)/CS\(_2\)
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?
Why is molecularity applicable only for elementary reactions whereas order is applicable for elementary as well as complex reactions?
What is the effect of temperature on the rate constant of a reaction?
Define complex reaction.
What is a rate determining step?
Which one of the following is a disaccharide? \[ \text{Glucose, Lactose, Amylose, Fructose} \]
What is the difference between native protein and denatured protein?
Amides are less basic than amines.
Aromatic primary amines cannot be prepared by Gabriel Phthalimide synthesis.
Arrange the following compounds in increasing order of their boiling point: \[ \text{(CH}_3\text{)}_2\text{NH, CH}_3\text{CH}_2\text{NH}_2, \text{CH}_3\text{CH}_2\text{OH} \]
2-Bromobutane to but-2-ene
Propene to 1-Iodopropane
Draw the structure of the major monohalo product for each of the following reactions:
Zn\(^{2+}\) salts are colourless. Why?
Which element is a strong reducing agent in +2 oxidation state and why?
The elements of the 3d transition series are given as: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. Answer the following:
Copper has an exceptionally positive \( E^\circ_{\text{M}^{2+}/\text{M}} \) value, why?
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: \[ R = 8.314 \, \text{J K}^{-1} \, \text{mol}^{-1}, \quad \log 4 = 0.602 \]
