Question
Write a note on Strecker reaction.
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Similar questions
Match the common names given in Column I with the IUPAC names given in Column II.
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Column I
(Common names)
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Column II
(IUPAC names)
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(i)
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Cinnamaldehyde
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(a)
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Pentanal
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(ii)
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Acetophenone
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(b)
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Prop-2-enal
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(iii)
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Valeraldehyde
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(c)
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4-Methylpent-3-en-2-one
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(iv)
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Acrolein
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(d)
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3-Phenylprop-2-enal
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(v)
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Mesityl oxide
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(e)
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1-Phenylethanone
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The following data were obtained during the first order thermal decomposition of $N_2O_5(g)$ at a constant volume:
$2N_2O_5(g) → 2N_2O_4(g) + O_2(g)$
Calculate the rate constant.
→$2N_2O_5(g) → 2N_2O_4(g) + O_2(g)$
| S. No. | Time/s | Total pressure/atm |
| $1.$ | $0$ | $0.5$ |
| $2.$ | $100$ | $0.512$ |
The rate of a reaction becomes four times when the temperature changes from $293\ K$ to $313\ K.$ Calculate the energy of activation $(E_a)$ of the reaction assuming that it does not change with temperature.
$[R=8.314\ J\ K^{-1}\ MOL^{-1},\log 4=0.6021]$
→$[R=8.314\ J\ K^{-1}\ MOL^{-1},\log 4=0.6021]$
Draw the structure of the following:
$H_2S_2O_8$
→$H_2S_2O_8$
For $M^{2+}/M$ and $M^{3+}/M^{2+}$ systems the values for some metals are as follows:
Use this data to comment upon:
→| $Cr^{2+}/Cr$ | $- 0.9 V$ | $Cr^3/Cr^{2+}$ | $- 0.4 V$ |
| $Mn^{2+}/Mn$ | $- 1.2 V$ | $Mn^{3+}/Mn^{2+}$ | $+ 1.5 V$ |
| $Fe^{2+}/Fe$ | $- 0.4 V$ | $Fe^{3+}/Fe^{2+}$ | $+ 0.8 V$ |
- The stability of $Fe^{3+}$ in acid solution as compared to that of $Cr^{3+}$ or $Mn^{3+}.$
- The ease with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.
What is the reaction of formic acid with the following :
(i) Concentrated $H _2 SO _4$
(ii) Aqueous $C l _{ 2 }$ (chlorine water)
→(i) Concentrated $H _2 SO _4$
(ii) Aqueous $C l _{ 2 }$ (chlorine water)
Physical and chemical adsorption respond differently with a rise in temperature. What is this difference and why is it so?
Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Explain.
How are polymers classified on the basis of structure?
How can you prepare $Cl_2$ from $HCl$ and $HCl$ from $Cl_2?$ Write reactions only.
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