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A reducing sugar gives a precipitate of silver metal with Benedict's reagent.?
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∙ 7y ago
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∙ 7y ago
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What does Tollens reagent Fehlings solution 2 4-Dinitrophenylhydrazine and Benedicts solution test for and what are the results?
Brady's reagent (2,4-DNP) forms a orange precipitate for all carbonyl compounds (C=O functional group), both aldehydes (primary) and ketones (secondary). However, recrystalisation of the orange precipitate gives characteristic melting points of the crystal for each carbonyl compound (therefore the presence of an orange precipitate indicates a carbonyl compound and the melting point of the crystallised precipitate indicates the type of carbonyl compound; aldehyde or ketone). Tollen's reagent (diamminesilver nitrate solution) is reduced and forms a silver mirror when heated with an aldehyde. It distinguishes between aldehydes and ketones as ketones do not react (no silver mirror formed) as they can not be oxidised further. Fehling's solution (copper II ions in sodium hydroxide) is reduced from a blue solution (Cu II ions) to a brick red precipitate (Cu I ions) when heated in the presence of an aldehyde. Ketones do not react as they can not be oxidised further. The Benedict's test is used in organic chemistry to distinguish between reducing sugars (brick red precipitate formed) and non-reducing sugars (no reaction).
What is the reaction product of Fentons reagent with silver?
The reaction product of Fenton's reagent (a solution of hydrogen peroxide and ferrous iron) with silver is typically silver oxide (AgO) or silver hydroxide (AgOH) depending on the conditions of the reaction. These products are formed when the silver ions present in the solution react with the hydroxyl radicals generated by Fenton's reagent.
How do you precipitate fluoride from water?
Add silver nitrate solution. flouride is precipitated as silver fluoride
When aqueous solutions of sodium chloride Na Cl and silver nitrate AgNO3 are mixed a precipitate is not sodium nitrate?
The reaction is:LNaCl + AgNO3 = AgCl + NaNO3The white precipitate is silver chloride.
How can you make potassium chloride precipitate?
You can make potassium chloride precipitate by adding silver nitrate (AgNO3). The chemical equation being AgNO3(aq)+ KCl(aq) = KNO3(aq) + AgCl(s) You know that silver nitrate will form a precipitate as you can see this on a solubility chart.
What is the reagent used to precipitate chloride ions?
silver nitrate (AgNO3)
Another reagent that could be used in place of HCL to precipitate cations of the silver group?
HNO3 which forms white precipitate..
What does Tollens reagent Fehlings solution 2 4-Dinitrophenylhydrazine and Benedicts solution test for and what are the results?
Brady's reagent (2,4-DNP) forms a orange precipitate for all carbonyl compounds (C=O functional group), both aldehydes (primary) and ketones (secondary). However, recrystalisation of the orange precipitate gives characteristic melting points of the crystal for each carbonyl compound (therefore the presence of an orange precipitate indicates a carbonyl compound and the melting point of the crystallised precipitate indicates the type of carbonyl compound; aldehyde or ketone). Tollen's reagent (diamminesilver nitrate solution) is reduced and forms a silver mirror when heated with an aldehyde. It distinguishes between aldehydes and ketones as ketones do not react (no silver mirror formed) as they can not be oxidised further. Fehling's solution (copper II ions in sodium hydroxide) is reduced from a blue solution (Cu II ions) to a brick red precipitate (Cu I ions) when heated in the presence of an aldehyde. Ketones do not react as they can not be oxidised further. The Benedict's test is used in organic chemistry to distinguish between reducing sugars (brick red precipitate formed) and non-reducing sugars (no reaction).
Why pyrrole-2-aldehyde does not respond to tollens reagent?
Pyrrole-2-aldehyde does not respond to Tollens reagent because it is not a reducing sugar. Tollens reagent (silver nitrate) is used to test for the presence of aldehyde groups, which are commonly found in reducing sugars. Reducing sugars contain aldehyde groups and are capable of donating electrons to Tollens reagent, forming a silver mirror on the test tube wall. Pyrrole-2-aldehyde does not contain aldehyde groups, and therefore is not a reducing sugar. As a result, it does not react with Tollens reagent.
How can you distinguish between a precipitate of silver chloride and silver iodide?
their colours, a white precipitate for silver chloride, and a yellow precipitate for silver iodine
What is the test reagent for chloride ion?
The most common one is a solution of silver nitrate, which forms a white precipitate of silver chloride when added to a solution containing more than a minute concentration of chloride ions.
What is a example of formation of a precipitate?
an example of a precipitate is: silver nitrate + sodium chloride = silver chloride and sodium nitrate the precipitate is the silver chloride it forms a white powder
What is the precipitate formed when silver nitrate and iron chloride are mixed?
Silver Chloride (AgCl) is the precipitate in this reaction.
What precipitate is formed with MgSO4 and AgNO3?
The precipitate is silver sulfate, Ag2SO4
Is any precipitate is formed on the reaction of silver nitrate with sulphuric acid?
Yes. A precipitate of silver sulfate is formed.
What is an example of the formation of a precipitate?
Formation of a precipitate is evidence of a chemical reaction.
What is the precipitate formed from Silver Nitrate and Lead Nitrate?
Silver nitrate and lead nitrate do not react, so there would be no precipitate.
