Applying Concepts
These questions test conceptual learning.
Ten milliliters of a solution of an acid is mixed with 10 Ml of a solution of a base. When the mixture was tested with litmus paper, the blue litmus turned red, and the red litmus remained red. Which of these interpretations is (are) correct?
(a) The mixture contains more hydrogen ions than hydroxide ions.
(b) The mixture contains more hydroxide ions than hydrogen ions.
(c) When an acid and a base react, water is formed, so the mixture cannot be acidic or basic.
(d) If the acid was HCl and the base was NaOH, the concentration of HCl in the initial acidic solution must have been greater than the concentration of NaOH in the initial basic solution.
(e) If the acid was H2SO4 and the base was NaOH, the concentration of H2SO4 in the initial acidic solution must have been greater than the concentration of NaOH in the initial basic solution.
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