What Is the Minimum Concentration of Cd²⁺ Required to Begin

question 19

Multiple Choice

What is the minimum concentration of Cd²⁺ required to begin precipitating Cd(OH) ₂(s) in a solution buffered at pH 10.83? The K_sp of Cd(OH) ₂ is 5.3 × 10^-15 and K_w = 1.01 × 10^-14.

• A) 3.4 × 10^-4 M
• B) 3.6 × 10^-4 M
• C) 7.8 × 10^-12 M
• D) 1.2 × 10^-8 M
• E) 4.5 × 10^-17 M

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Definitions:

Deferred Liability

A deferred liability is a financial obligation that a company owes and is recorded on its balance sheet to be settled in a future period.

Uncertain Future Events

Events whose occurrence and impact cannot be predicted with certainty, often requiring risk management and contingency planning.

Contingent Liability

A possible obligation that arises from past events and whose existence will be confirmed only by the occurrence or non-occurrence of one or more uncertain future events not wholly within the control of the entity.

AASB 137

refers to an Australian accounting standard concerning the recognition and measurement of provisions, contingent liabilities, and contingent assets.