Consider the Dissolution of MnS in Water

question 67

Multiple Choice

Consider the dissolution of MnS in water. [K_sp(MnS) =3.0 × 10^-14] MnS(s) + H₂O(l) Mn²⁺(aq) + HS^-(aq) + OH^-(aq)
How is the solubility of manganese(II) sulfide affected by the addition of aqueous potassium hydroxide to the system?

• A) The solubility will be unchanged.
• B) The solubility will decrease.
• C) The solubility will increase.
• D) The amount of KOH added must be known before its effect can be predicted.
• E) The pK_a of H₂S is needed before a reliable prediction can be made.

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Definitions:

Effector

An organ, gland, or muscle capable of responding to a stimulus, especially a nerve impulse.

Nervous System

The complex network of nerve cells and fibers that transmits nerve impulses between parts of the body, enabling sensation, movement, and thought.

Motor Neuron

A type of nerve cell that transmits signals from the brain and spinal cord to muscles, causing them to contract.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and transmitting neural information.