Which of the Following Elements Can Be Isolated by Electrolysis

question 39

Multiple Choice

Which of the following elements can be isolated by electrolysis of the aqueous salt shown?

• A) phosphorus from K₃PO₄(aq)
• B) sodium from NaBr(aq)
• C) aluminum from AlCl₃(aq)
• D) fluorine from KF(aq)
• E) iodine from NaI(aq)

Recognize the difference between one-sided and two-sided hypotheses.

Understand how the significance level (alpha) affects the probability of Type I error and rejection region size in hypothesis testing.

Identify how p-values are used in hypothesis decision making.

Learn the concept of alternative and null hypotheses in statistical tests.

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