When a Small Amount of HCl or NaOH Is Added

question 162

Multiple Choice

When a small amount of HCl or NaOH is added to a solution of Na2HPO4, the pH of the solution barely changes. Based on these observations, all of the following are true concerning the compound Na2HPO4, except

• A) Na2HPO4 is able to accept extra hydrogen ions from the HCl.
• B) Na2HPO4 is able to donate hydrogen ions to the OH- from NaOH.
• C) Na2HPO4 adsorbs excess H+ and OH- directly onto the surface of its crystalline structure.
• D) Na2HPO4 is a salt formed from reacting a strong base with a weak acid.
• E) Na2HPO4 acts as a buffer.

Recognize the ethical considerations in concealing information in experiments to eliminate bias.

Identify strategies to address common issues in research design (e.g., placebo effect, demand characteristics).

Understand the various research methods used in psychology, such as surveys, naturalistic observations, case studies, and experiments.

Recognize the advantages and limitations of using surveys in psychological research.

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Definitions:

Present Value

Present value is the current worth of a future sum of money or stream of cash flows given a specified rate of return, used in time value of money calculations to compare investment options.

Amortized Loan

A loan with scheduled periodic payments that consist of both principal and interest, so the loan is paid off by the end of the term.

Repayment Of Principal

Repayment of principal is the process of paying back the original amount borrowed in a loan, separate from interest payments.

Time Lines

Graphical representations showing a line that marks important events in chronological order along specific dates.