Which one of the following is a common acid?

a. banking soda
b. antacid
c. ammonia
d. vitamin c

Hi!

The correct option is D. Vitamin C.

Vitamin C, or more commonly ascorbic acid, is considered a weak sugar acid that is widely available in fruits and vegetables. It is structurally related to glucose, and has the molecular formula of C6H8O6, and is the only acidic substance of the options.

Baking Soda contains sodium bicarbonate which dissolves in water to yield a basic solution.

Antacids may be aluminium hydroxide or sodium bicarbonate that react with acids to neutralize the pH. Antacids are normally used to neutralize the pH of the stomach in people with stomach ulcers.

Ammonia (NH3) is essentially considered a weak base, which dissolve in water to yield hydroxide ions and ammonium ions.

Hope this helps!

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.