The Following Pictures Represent Solutions at Various Stages in the Titration

question 73

Multiple Choice

The following pictures represent solutions at various stages in the titration of a weak diprotic acid H₂A with aqueous KOH.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent A^2- ions.(K⁺,H₃O⁺ initially present,OH^- initially present and solvent water molecules have been omitted for clarity) .
-Which picture represents the system with the lowest pH?

• A)(1)
• B)(2)
• C)(3)
• D)(4)

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Definitions:

Marginal Product

The additional output that results from using one more unit of a particular input, while holding other inputs constant.

Average Product

The output obtained by dividing the total product by the number of units of the variable input used in production, ideally reflecting productivity per input unit.

Total Product

The total output or quantity of goods produced by a firm or economy at a given level of input.

Diminishing Returns

A principle stating that if one factor of production is increased while other factors are held constant, the incremental increases in output will eventually decrease.