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5-Amino Phthalide Reacet with NaNO2+HCL to conversion of dizonium salt React with CuSO4+KCN To conversion of 5-cyano phthalide
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Diazotization is which order reaction?
1 order
What is diazotization?
is a reaction between organic compounds, either primary, secondary or teritary, the reactants react together and water molecules are produced similar to a condensation reaction.
What are the applications of Diazotization reactions?
1. Most important application of Diazotization is in making AZO dyes used for dying and printing of textiles. 2. for converting Amino group in aromatic compound into Halogen group via Sandmeyer reaction. 3. for converting Amino group in aromatic group into nitrile group. 4. for Making AZO pigments used for varities of coloration - Paints, printing inks, Cosmetics colors etc. 5. for removal of Amino group. 6. for converting Amino group in aromatic compound into Hydroxyl group.
Explain why the diazotization reaction was carried out in the presence of excess HCL?
This is to make sure the phenylamine is converted to the ammonium salt. This prevents coupling occurring between the diazonium produced, and any unreacted phenylamine. Phenylamine itself has a lone pair on the nitrogen, which would allow unwanted coupling to occur.
Why do you use external indicator in diazotization titration?
external indicator is required in diazotization as to observe the end point of the reaction. internal indicators cannot give the endpoint because they may form complexes which may cause hindrance. for example, in the assay of sulfa drugs, iodine-starch paste is used as external indicator, because if we add iodine paste in the conical flask it will react with the reactants and give the blue-black coloration in the beginning of the actions, which will not tell the end point of the reaction. instead, the iodine-starch paste is applied in a paper, and the compound from the burette is added in small quantities into the sulfa drug solution, and after every few milliliters a drop of solution from the conical flask is dropped on the iodine-starch paste, when there is sudden change in colour, the addition from the burette is stopped. and observations are made.
Diazotization is which order reaction?
1 order
What is diazotization?
is a reaction between organic compounds, either primary, secondary or teritary, the reactants react together and water molecules are produced similar to a condensation reaction.
Discuss on Diazotization of aromatic compound?
conversion of amines into halogen groups. this process called sand mayer reaction. mainly preparation of dyes. amines replaces with hydroxylation
Why is the diazotization reaction done at zero to five degrees centigrade?
AnswerThe reaction is done at zero to 5 degrees centigrade because the diazonium ion is so reactive. It reacts with water above 5 degrees giving off nitrogen gas.Also, running the reaction at or near zero degrees Celsius limits the formation of side products and prevents thermal decomposition.
What are the applications of Diazotization reactions?
1. Most important application of Diazotization is in making AZO dyes used for dying and printing of textiles. 2. for converting Amino group in aromatic compound into Halogen group via Sandmeyer reaction. 3. for converting Amino group in aromatic group into nitrile group. 4. for Making AZO pigments used for varities of coloration - Paints, printing inks, Cosmetics colors etc. 5. for removal of Amino group. 6. for converting Amino group in aromatic compound into Hydroxyl group.
Explain why the diazotization reaction was carried out in the presence of excess HCL?
This is to make sure the phenylamine is converted to the ammonium salt. This prevents coupling occurring between the diazonium produced, and any unreacted phenylamine. Phenylamine itself has a lone pair on the nitrogen, which would allow unwanted coupling to occur.
Would you need to use sodium carbonate for the diazotization of p-nitroaniline?
No, You would need a weak acid so the solution would be acidic
Why do you use external indicator in diazotization titration?
external indicator is required in diazotization as to observe the end point of the reaction. internal indicators cannot give the endpoint because they may form complexes which may cause hindrance. for example, in the assay of sulfa drugs, iodine-starch paste is used as external indicator, because if we add iodine paste in the conical flask it will react with the reactants and give the blue-black coloration in the beginning of the actions, which will not tell the end point of the reaction. instead, the iodine-starch paste is applied in a paper, and the compound from the burette is added in small quantities into the sulfa drug solution, and after every few milliliters a drop of solution from the conical flask is dropped on the iodine-starch paste, when there is sudden change in colour, the addition from the burette is stopped. and observations are made.
In diazotization beta naphthol used?
Actually beta naphthol is not used in diazotization.It is used to confirm the formation of diazonium salt.Because the diazonium salt so formed undergo the COUPLING REACTION with beta naphthol to form a ORANGE DYE or DYESTUFF. eg. aniline with HCl and Sodium Nitrite followed by the treatment with beta naphthol in NaOH at 0-5 degree celcius forms Phenyl azo-beta naphthol(orange).
Why KBr is added as in diazotization?
In aqueous medium, formation of NO+ ion takes place. Addition of KBr, increases the electrophilicity of this nitonium ion. This is due to higher electronegativity of (Br), as it pulls the electron cloud towards itself. Hence, the NO+ reacts faster with the amine.
Would you need to use sodium carbonate for the diazotization of m-nitroaniline?
You need to use sodium carbonate when you are attempting to diazotize a poorly soluble acid, such as sulfanilic acid. m-nitroaniline isn't acidic, so adding sodium carbonate would have no effect.
What is the difference between normal reaction and abnormal reaction?
Normal reaction happens when the reaction is normal. Abnormal reaction happens when the reaction is abnormal.
