Question

A lab director asks two students, Lydia and Damien, to each select a bottle of a concentrated weak base. When they reach the cabinets, they find different chemical solutions with varying concentrations. All of the options are bases. Which bottles should they choose? Lydia should select the bottle of _______ . Damien should select the bottle of_______ .

Answer 1

Lydia and Damien should select the bottle of weak base with high molarity(M)

Further explanation

According to Arrhenius, Base is a compound which in water releases OH- ions

Electrolytes (acids or bases) with a small degree of ionization are classified as weak electrolytes

If two students, Lydia and Damien, select each bottle of a concentrated weak base, then a guide can be chosen to choose some of the solutions available in the lab :

• Base compounds are usually known from their names ending in hydroxide suffixes such as NaOH, sodium hydroxide

• The weak base will be partially ionized in water because the ionization degree is close to 0 or less than 1

• If there is a Kb value (base ionization constant), then this shows the strength of the base. The greater the value of Kb, the greater the base strength

• If there are some weak bases, then Lydia and Damien choose the highest concentration, usually indicated by the value of Molarity (M)

Because no choice solution is included, the weak base example is:

Ammonia (NH₃)

Aluminum hydroxide (Al (OH)₃)

Copper (II) hydroxide Cu (OH)₂

Mercury (II) hydroxide Hg (OH)₂

Learn more

the Brønsted theory

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Keywords : weak base, select a bottle, chemical solutions

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