What is a Reagent? - BYJUS What is a Reagent? A reagent is a compound or mixture added to a system to start or test a chemical reaction A reagent can be used to determine the presence or absence of a specific chemical substance as certain reactions are triggered by the binding of reagents to the substance or other related substances Table of Contents Reagent Examples
Reagent Definition - BYJUS Reagent Definition A reagent is a compound or mixture that is added to a system in order to initiate or test a chemical reaction Because the binding of reagents triggers certain reactions to the substance or other related substances, reagents can be used to determine the presence or absence of a specific chemical substance
What is Fenton’s Reaction? Fenton’s reagent is a term that is used to denote a solution of hydrogen peroxide that contains the ferrous ion (the Fe 2+ cation in which iron exhibits an oxidation state of +2) The ferrous ion works as a catalyst and promotes the oxidation of contaminants and wastewater
Limiting Reagent Chemistry Questions with Solutions - BYJUS Since Na 2 O produces less NaOH than H 2 O, it is the limiting reagent Practise Questions on Limiting Reagent Q1 The reactant which is not consumed completely in the reaction is _____ Q2 In a reaction: – A + B 2 → AB 2 Identify the limiting reagent, if any, in the following reaction mixtures (i) 300 atoms of A + 200 molecules of B
What is Tollens Test? - BYJUS Tollens reagent is a solution of silver nitrate (AgNO 3) and Ammonia (NH 3) Alpha Hydroxy Ketone Tollens Test Alpha hydroxy ketones are able to give a positive Tollens’ test since α-hydroxy ketones have the ability to tautomerize to aldehydes, and the aldehyde gives the Tollens’ test
What is Limiting Reagents? - BYJUS The limiting reagent depends on the mole ratio, not on the masses of the reactants present Limiting Reagent Before and After Reaction From the illustration shown above, it can be observed that the limiting reactant is the reason the reaction cannot continue since there is nothing left to react with the excess reactant
What is a Reactant? - BYJUS A reagent is a substance that is added to cause a chemical reaction or to test whether one has occurred in analytical chemistry, whereas reactants are the starting material used in a chemical reaction to produce one or more products Reagents are not always consumed in a reaction but reactants are completely used during the reaction
What is the Lucas Test? - BYJUS As discussed earlier, the test can be used to differentiate the reaction speed of the alcohol with the given Lucas reagent This is done by measuring the time taken for the clear solution to turn turbid Given below is a table describing the positive Lucas test observations for different types of alcohols
What is Benedict’s Test? Benedict’s reagent, also known as Benedict’s solution, is a chemical reagent which is made up of a complex mixture of sodium citrate, sodium carbonate, and the pentahydrate of copper(II) sulfate When exposed to reducing sugars and other reducing substances, Benedict’s reagent changes its colour from clear blue to brick red
My first time mixing Krolls reagent - Physics Forums I am going to etch some titanium and need to mix up a 100ml batch of Kroll's reagent ( 92ml distilled water, 6ml nitric acid and 2ml hydrofluoric acid Do I add the nitric acid to the water first and then add the hydrofluoric or vice-versa?