Question
- Explain why an alkylamine is more basic than ammonia.
- How would you convert:
- Aniline to nitrobenzene.
- Aniline to iodobenzene?
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Answer
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Write the products formed when (CH3)3 C-CHO reacts with the following reagents:
i. CH3COCH3 in the presence of dilute NaOH
ii. HCN
iii. Conc. NaOH
i. CH3COCH3 in the presence of dilute NaOH
ii. HCN
iii. Conc. NaOH
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→Calculate the standard free energy change for the following reaction at 25°C.
$\text{Au(s) + Ca}^{2+}(1\text{M})\xrightarrow{ \ \ \ \ \ \ \ }\text{Au}^{3+}(1\text{m) + Ca(s)}$
$\text{E}^{\circ}_{\text{Au}^{3+}/\text{Au}}=+1.50\text{V},=\text{E}^{\circ}_{\text{Ca}^{2+}/\text{Ca}}-2.87\text{V}$
Predict whether the reaction will be spontaneous or not at 25°C. Which of the above two half cells will act as an oxidising agent and which one will be a reducing agent?
→$\text{Au(s) + Ca}^{2+}(1\text{M})\xrightarrow{ \ \ \ \ \ \ \ }\text{Au}^{3+}(1\text{m) + Ca(s)}$
$\text{E}^{\circ}_{\text{Au}^{3+}/\text{Au}}=+1.50\text{V},=\text{E}^{\circ}_{\text{Ca}^{2+}/\text{Ca}}-2.87\text{V}$
Predict whether the reaction will be spontaneous or not at 25°C. Which of the above two half cells will act as an oxidising agent and which one will be a reducing agent?
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Gabriel phthalimide synthesis.
Gabriel phthalimide synthesis.
Explain optical isomerism in co-ordination compound.
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Calculate the emf of the following cell at 298 K .
$
2 Cr(s)+3 Fe^{2+}(0.1 M) \rightarrow 2 Cr^{3+}(0.01 M)+3 Fe(s)
$
Given, $E_{c r^{3+} / c r}^o=-0.74 V, E_{F e^{2+} / F e}^o=-0.44 V$
→$
2 Cr(s)+3 Fe^{2+}(0.1 M) \rightarrow 2 Cr^{3+}(0.01 M)+3 Fe(s)
$
Given, $E_{c r^{3+} / c r}^o=-0.74 V, E_{F e^{2+} / F e}^o=-0.44 V$
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