What is the name of the compound with the formula al(ch3coo)3 ?

             Aluminium Acetate

Explanation:

                   Aluminium Acetate is made up of Aluminium and Acetic Acid. The chemical formula of Aluminium Acetate can be opened into its components as,

                                   Al(H₃CCOO)₃    →     Al⁺³  +  3 H₃CCOO⁻

It means Aluminium Acetate is made up of one Aluminium Cation and three Acetate Anions.

Nomenclature:

                      Ionic compounds are named as the Positive specie is named first (in our case Aluminium) and the negative part is named secondly (in our case Acetate).

Name of Acetate Ion:

                           Carboxylic acids are weak acids. On donation of proton carboxylic acids are converted into Carboxylate ions as,

              R--COOH    →    R--COO⁻  +  H⁺    (Carboxylic acid into Carboxylate)

Examples:

              H₃C--COOH    →    H₃--COO⁻  +  H⁺    (Acitic acid into Acetate)

    H₅C₂--COOH    →    H₅C₂--COO⁻  +  H⁺    (Propanoic acid into Propanoate)

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.