It is a test for presence of phenol. Fe itself is a transition metal that form a complex ions with phenol. Hence, the Fe can undergo d-d transition that give a colour which is purple in this case.
Normal ferric chloride gives a positive test for phenol as it forms a violet complex with it. This can lead to false positives in other compounds that also react with ferric chloride, making it unreliable for detecting phenol specifically. Instead, a modified version called FeCl3/KI reagent is commonly used for phenol detection as it gives a distinct green color with phenol, allowing for more accurate and specific results.
The balanced equation for the reaction between phenol (C6H5OH), sodium hydroxide (NaOH), and iron(III) chloride (FeCl3) is: C6H5OH + NaOH + FeCl3 → C6H4(OH)Na + FeCl2 + H2O
Take 1 ml FeCl3 solution. add ammonia solution drop wise till brown precipitate just form. Now again add FeCl3 solution till brown precipitate just dissolve. This is your Neutral FeCl3 solution.
The solution of FeCl3 is acidic. This is because when FeCl3 dissolves in water, it forms Fe3+ ions and Cl- ions. The Fe3+ ions react with water to produce H+ ions, which makes the solution acidic.
If salicylic acid is tested with FeCl3, a violet color will be observed indicative of the presence of phenols in the compound. This test is commonly used to identify the presence of phenolic functional groups in organic compounds.
ferric salicylate(Violet colour compound) and HCL are made
Normal ferric chloride gives a positive test for phenol as it forms a violet complex with it. This can lead to false positives in other compounds that also react with ferric chloride, making it unreliable for detecting phenol specifically. Instead, a modified version called FeCl3/KI reagent is commonly used for phenol detection as it gives a distinct green color with phenol, allowing for more accurate and specific results.
The balanced equation for the reaction between phenol (C6H5OH), sodium hydroxide (NaOH), and iron(III) chloride (FeCl3) is: C6H5OH + NaOH + FeCl3 → C6H4(OH)Na + FeCl2 + H2O
Take 1 ml FeCl3 solution. add ammonia solution drop wise till brown precipitate just form. Now again add FeCl3 solution till brown precipitate just dissolve. This is your Neutral FeCl3 solution.
The solution of FeCl3 is acidic. This is because when FeCl3 dissolves in water, it forms Fe3+ ions and Cl- ions. The Fe3+ ions react with water to produce H+ ions, which makes the solution acidic.
When FeCl3 and KCNS are mixed in distilled water, a blood-red color solution is formed due to the formation of iron(III) thiocyanate complex. This complex is formed as the Fe3+ ions from FeCl3 react with the thiocyanate ions from KCNS.
The substitution reactions of phenol are easier than benzene, phenol directly reacts with bromine and gives tribromo phenol while benzene requires FeCl3 as a catalyst and gives mono bromo phenol.
If salicylic acid is tested with FeCl3, a violet color will be observed indicative of the presence of phenols in the compound. This test is commonly used to identify the presence of phenolic functional groups in organic compounds.
You add a specific ionic compound in a solution to determine if phenol or any of its derivatives are present. Ferric chloride (FeCl3) for example, can be used for such tests. Basically, when you mix the solution with the compound, the ions will interact with the phenol molecules or groups, and as a result, the solution will briefly change color. If there is no colour change in the solution, this suggest there is no phenol or phenol-based molecules in your solution.
When eugenol (C10H12O2) reacts with FeCl3, it forms a complex between the iron ion and the phenolic hydroxyl group of eugenol. This complexation reaction is often used to detect the presence of phenolic hydroxyl groups in organic compounds.
FeCl3 + H2O4-2 +Zn
To find the number of moles in 1.1 grams of FeCl3, you'll first determine the molar mass of FeCl3 (55.85 + 35.45*3) = 162.31 g/mol. Then, divide the given mass (1.1g) by the molar mass to get the number of moles (1.1g / 162.31g/mol ≈ 0.007 moles of FeCl3).