A Student Adds 0

question 112

Multiple Choice

A student adds 0.1 mol of oxalic acid and 0.1 mol of sodium dihydrogen phosphate to enough water to make 1.0 L of solution. The following equilibrium is established with the concentrations of the products greater than the concentrations of the reactants. Which of the statements about the equilibrium system is correct? H₂C₂O₄(aq) + H₂PO₄^-(aq) HC₂O₄^-(aq) + H₃PO₄(aq)

• A) Oxalic acid is a weaker acid than phosphoric acid.
• B) The hydrogen oxalate anion, HC₂O₄^-, is a stronger base than the dihydrogen phosphate anion, H₂PO₄^-.
• C) Phosphoric acid is a weaker acid than oxalic acid.
• D) The dihydrogen phosphate anion, H₂PO₄^-, is a stronger acid than oxalic acid.
• E) Water is a stronger acid than either oxalic or phosphoric acids.

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Definitions:

Dispersed Distribution

A distribution where the values of the dataset are spread out or scattered widely.

Z Scores

Standard scores indicating how many standard deviations an element is from the mean.

Observations

In research, the recorded data or measurements of phenomena under study.

Data Values

Numerical or categorical values observed or recorded from an experiment or study.