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:

Parking Fees

Parking fees are charges imposed for the use of parking facilities, aiming to regulate parking spaces and generate revenue for maintenance or other municipal needs.

Confidence Interval

A range of values, derived from sample statistics, that is likely to contain the value of an unknown population parameter, with a certain degree of confidence.

Confidence Interval

A sequence of numerical values, obtained from the statistics of a sample, that likely envelops an undetected population parameter.

Sample Mean

The average value calculated from a subset of a population, used to estimate the population mean.