Question
Methyl acetate and propionic acid are
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Answer
d
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From the given data at $298\,K$
→$\Delta H_f^o[CO_2,g] = -394 \,kJ/mol$
$\Delta H_f^o[H_2O,l] = -286\, kJ/mol$
$\Delta H_f^o [propene ,g] = 20\,kJ/mol$
cyclopropane $(g)$ $\to$ propene $(g)$ ; $\Delta H^o_{isomerisation} = $ $-33\,kJ/mol$.
Calculate $\Delta H^o_{combustion}$ [cyclopropane, $(g)$]
......$ kJ/mol$
Given below are two statements :
Statement I : In the oxalic acid vs $\mathrm{KMnO}_{4}$ (in the presence of dil $\mathrm{H}_{2} \mathrm{SO}_{4}$ ) titration the solution needs to be heated initially to $60^{\circ} \mathrm{C}$, but no heating is required in Ferrous ammonium sulphate (FAS) vs $\mathrm{KMnO}_{4}$ titration (in the presence of dil $\mathrm{H}_{2} \mathrm{SO}_{4}$ )
Statement II : In oxalic acid vs $\mathrm{KMnO}_{4}$ titration, the initial formation of $\mathrm{MnSO}_{4}$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs $\mathrm{KMnO}_{4}$, heating oxidizes $\mathrm{Fe}^{2+}$ into $\mathrm{Fe}^{3-}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below :
→Statement I : In the oxalic acid vs $\mathrm{KMnO}_{4}$ (in the presence of dil $\mathrm{H}_{2} \mathrm{SO}_{4}$ ) titration the solution needs to be heated initially to $60^{\circ} \mathrm{C}$, but no heating is required in Ferrous ammonium sulphate (FAS) vs $\mathrm{KMnO}_{4}$ titration (in the presence of dil $\mathrm{H}_{2} \mathrm{SO}_{4}$ )
Statement II : In oxalic acid vs $\mathrm{KMnO}_{4}$ titration, the initial formation of $\mathrm{MnSO}_{4}$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs $\mathrm{KMnO}_{4}$, heating oxidizes $\mathrm{Fe}^{2+}$ into $\mathrm{Fe}^{3-}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below :
${H_2}(g) + C{l_2}(g)\,\, \to \,\,2HCl(g)\,.\,\Delta H = - 44\,kcal$
→$2Na(s) + 2HCl(g)\,\, \to \,\,2NaCl(s) + {H_2}(g),$$\Delta H = - 152\,kcal$ For the reaction $Na(s) + \frac{1}{2}C{l_2}(g)\,\, \to \,\,NaCl(s),\,\Delta H = $ .....$kcal$
Rate constant for a chemical reaction taking place at $500\, K$, is expressed as $K = A\, e^{-1000}$. The activation energy of the reaction is
→Which of the following is not chiral?
Total number of moles of $AgCl$ precipitated on addition of excess of $AgNO _j$ to one mole each of the following complexes $\left[ Co \left( NH _3\right)_4 Cl _2\right] Cl$, $\left[ Ni \left( H _2 O \right)_6\right] Cl _2,\left[ Pt \left( NH _3\right)_2 Cl _2\right]$ and $\left[ Pd \left( NH _3\right)_4\right] Cl _2$ is $...............$
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→The diamagnetic species is