MTTC MTTC Chemistry 3

Question 1

What is the pH of a solution with a hydrogen ion concentration of 1×10⁻⁴ M?

Accepted Answer

4

Answer

pH = −log[H⁺] = −log(1×10⁻⁴) = 4.

Question 2

According to the Brønsted-Lowry definition, an acid is a substance that:

Accepted Answer

Donates protons (H⁺)

Answer

A Brønsted-Lowry acid donates a proton (H⁺) to another substance.

Question 3

What organic product is formed when a carboxylic acid reacts with an alcohol?

Accepted Answer

Ester

Answer

Esterification occurs when a carboxylic acid reacts with an alcohol, producing an ester and water.

Question 4

Which functional group characterizes alcohols?

Accepted Answer

−OH (hydroxyl)

Answer

Alcohols are defined by the hydroxyl (−OH) group bonded to a carbon atom.

Question 5

What is the IUPAC name for the straight-chain alkane with the molecular formula C₃H₈?

Accepted Answer

Propane

Answer

C₃H₈ has three carbon atoms, corresponding to the 'prop-' prefix, making it propane.

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