In 6/8 meter, the dotted quarter is considered the beat, and there are two of them in each measure. This is what makes 6/8 meter a compound duple meter; compound because its main beat can be divided into three parts, and duple because there are two main beats per measure:
Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials, and often have a characteristic pleasant, fruity odor.n chemistry, esters are chemical compounds derived from an acid (organic or inorganic) in which at least one-OH (hydroxyl) group is replaced by an-O- alkyl (alkoxy) group. Usually, esters are derived from a carboxylic acid and an alcohol.
The-OH group from the acid combines with the-H atom from the alcohol to form a water molecule. The R' -0- group from the alcohol attaches to the carbonyl carbon on the acid to produce the ester. The reaction is catalyzed by the addition of concentrated sulfuric acid, H 2 S0 4, and the reaction is reversible.dding concentrated sulfuric acid, a strong dehydrating agent, shifts the equilibrium to the products side by removing the water as it is formed. Equation 2 illustrates a specific example of an esterification reaction, that of methyl alcohol and acetic acid, to form methyl acetate.