A catalyst is a substance which alters or accelerates the rate of any chemical reaction without itself undergoing any change. Normally a catalyst is used in smaller amounts compared to the reactants or participants in the reaction. Lindlar catalyst is a heterogenous catalyst that consists of palladium deposited on calcium carbonate and treated with various [...]

Lucas reagent is a solution of anhydrous zinc chloride (Lewis acid) in concentrated hydrochloric acid. It is used as a reagent to test alcohols and classify them in accordance to their reactivity. The reaction is a substitution reaction where the chloride of the zinc chloride gets replaced by the hydroxyl group of the alcohol. The [...]