A Compound Was Found to Be Soluble in Water

question 10

Multiple Choice

A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound resulted in the formation of carbon dioxide. Which one of the following cations would form a precipitate when added to an aqueous solution of this compound?

• A) NH₄⁺
• B) Rb⁺
• C) K+
• D) Na⁺
• E) Cr³⁺

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Definitions:

Arms and Legs

Extremities of the human body, where arms are the upper limbs involving the shoulders to the hands, and legs are the lower limbs extending from the hips to the feet.

Teratogens

Agents, such as chemicals or viruses, that can cause harm to a developing fetus.

Embryo

The early developmental stage of an organism, in humans, this phase lasts from the second to the eighth week of pregnancy.

Fetus

A developing human from roughly eight weeks after conception to the moment of birth.