Which Equation Best Represents the Balanced $\underline{\text{ net ioni}}$

question 40

Multiple Choice

Which equation best represents the balanced $\underline{\text{ net ioni}}$ c equation for the reaction that occurs when aqueous solutions of sodium phosphate and iron(II) nitrate are mixed?

• A) 3Fe²⁺(aq)+ 2PO₄^3-(aq)\(\to\) Fe₃(PO₄)₂(s)
• B) 2Na⁺(aq)+ Fe(NO₃)₂(aq)\(\to\) 2NaNO₃(aq)+ Fe²⁺(aq)
• C) 3Fe²⁺(aq)+ 2PO₄^3-(aq)\(\to\) Fe₃(PO₄)₂(aq)
• D) 2Na₃PO₄(aq)+ 3Fe²⁺(aq)\(\to\) Fe₃(PO₄)₂(s)+ (Na⁺)₆(aq)
• E) 2Na₃PO₄(aq)+ 3Fe(NO₃)₂(aq)\(\to\) Fe₃(PO₄)₂(s)+ 6NaNO₃(aq)

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Definitions:

Confidence Interval

A range of values, derived from the sample data, that is likely to contain the value of an unknown population parameter.

Standard Deviation

A metric indicating the degree of spread or distribution among a collection of numbers.

Sample Size

The number of observations or individuals participating in a study from which conclusions about the larger population can be drawn.

Sampling Frame

The list or database from which a statistical sample is drawn; it represents the population of interest.