A Lab Technician Adds 0

question 52

Multiple Choice

A lab technician adds 0.015 mol of KOH to 1.00 L of 0.0010 M Ca(NO₃) ₂. K_sp = 6.5 × 10⁻⁶ for Ca(OH) ₂) . Which of the following statements is correct?

• A)Calcium hydroxide precipitates until the solution is saturated.
• B)The solution is unsaturated and no precipitate forms.
• C)The concentration of calcium ions is reduced by the addition of the hydroxide ions.
• D)One must know K _sp for calcium nitrate to make meaningful predictions on this system.
• E)The presence of KOH will raise the solubility of Ca(NO ₃)₂.

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Definitions:

Waiting Line

A queue or line formed when entities (people, objects, data) wait for service or processing, often analyzed to improve efficiency in various systems.

Waiting Line System

A mathematical model used to analyze the flow of customers or items in systems where there is a need to wait or queue, focusing on time spent in queues and system capacity.

Arrival Or Inputs

In operations research and systems management, refers to the entities that enter into a system or process for processing or service.

Queue Discipline

The rule or policy used to determine the order in which members of a queue are served or processed.