Question
What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.
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Calculate the void space in a primitive unit cell and also the fraction of the total volume occupied.
Calculate the equilibrium constant for the reaction.
$\ce{ Z n(s)+C u^{2+}(a q) \rightleftharpoons Z n^2(a q)+C u(s)}$
Given : $\ce{ E_{Z n^{2+} / Z n}^0=-0.763 V}$
and $\ce{E_{c u^{2+} / c u}^0=+0.34 V}$
→$\ce{ Z n(s)+C u^{2+}(a q) \rightleftharpoons Z n^2(a q)+C u(s)}$
Given : $\ce{ E_{Z n^{2+} / Z n}^0=-0.763 V}$
and $\ce{E_{c u^{2+} / c u}^0=+0.34 V}$
For the reaction $R\rightarrow P$, the concentration of a reactant changes from $0.03 M$ to $0.02 M$ in $25$ minutes. Calculate the average rate of reaction using units of time both in minutes and seconds.
→Calculate the e.m.f at $25^{\circ} c$ for the following cell:
$N i(s)\left|N i^{2+}(0.01 M) \| C u^{2+}(0.1 M)\right| C u(s)$
Given: $E ^0 Ni ^{+2} / Ni =-0.25 V$
$E_{C u^{2+} / C u}^0=+0.34 V$
$\left[1 F=96,500 Cmol ^{-1}\right]$. Calculate the maximum work that can be accomplished by the operation of this cell
→$N i(s)\left|N i^{2+}(0.01 M) \| C u^{2+}(0.1 M)\right| C u(s)$
Given: $E ^0 Ni ^{+2} / Ni =-0.25 V$
$E_{C u^{2+} / C u}^0=+0.34 V$
$\left[1 F=96,500 Cmol ^{-1}\right]$. Calculate the maximum work that can be accomplished by the operation of this cell
An organic compound $'A\ ’$ having molecular formula $\ce{C_3H_6}$ on treatment with aqueous $\ce{H_2SO4}$ gives $'B\ ’$ which on treatment with $\ce{HCl/ ZnCl_2}$ gives $'C\ ’.$ The compound $C$ on treatment with ethanolic $\ce{KOH}$ gives back the compound $'A\ ’.$ Identify the compounds $A, B, C.$
→A solution contains 1g mol. each of p-toluene diazonium chloride and pnitrophenyl diazonium chloride. To this 1g mol. of alkaline solution of phenol is added. Predict the major product. Explain your answer.
Explain the importance of carbohydrate compounds.
Boiling point of water at $750\ mm$ Hg is $99.63^\circ C.$ How much sucrose is to be added to $500\ g$ of water such that it boils at $100^\circ C.$
→How the following conversions can be carried out?
i. 2-Bromopropane to 1-bromopropane
ii. Chloroethane to butane
iii. Benzene to diphenyl
i. 2-Bromopropane to 1-bromopropane
ii. Chloroethane to butane
iii. Benzene to diphenyl
Calculate the emf of the following cell at $298 K:$
$\ce{Fe(s)|Fe^{2+}(0.001M)| |H^+(1M)|H_2(g)(1bar),Pt (s) (Given E^o_{cell}=+0.44 V)}$
→$\ce{Fe(s)|Fe^{2+}(0.001M)| |H^+(1M)|H_2(g)(1bar),Pt (s) (Given E^o_{cell}=+0.44 V)}$