Experiment 1: Molar Mass of a Solid Acid

Acid

a substance that produces hydrogen ions, or protons, when it is dissolved in water

monoprotic vs polyprotic

An acid that contains (one)/(more than one) acidic proton

diprotic

contains two acidic hydrogens

In an acid–base titration, the equivalence point is defined as…

the point in the reaction at which the number of moles of H+ furnished by the acid exactly equals the number of moles of OH– furnished by the base.

Moles of H+ = Moles of OH-

Moles of OH- / Moles of H+

(Concentration of OH-)x(Volume of OH-)

At the equivalence point the acid-base indicator in the solution changes from clear to pink.

You should stop adding titrant when_

the solution in the flask has the slightest shade of pink

Defined as the point at which the moles of H' equals moles of OH

Equivalence point

The titrant is

the solution in the buret

The indicator used to signal the endpoint in this experiment

Phenolphthalein

The formula for the hydroxide ion

OH-

True or false. One mole of sodium hydroxide will neutralize one mole of a diprotic acid.

F

True or False. All compounds containing hydrogen are acidic.

F