Calculate the Concentration of Malonate Ion (C₃H₂O₄^2-) in a 0

question 1

Multiple Choice

Calculate the concentration of malonate ion (C₃H₂O₄^2-) in a 0.200 M solution of malonic acid (C₃H₄O₄) . [For malonic acid, K_a1 = 1.4 * 10^-3, K_a2 = 2.0 * 10^-6.]

• A) 2.8 * 10^-4 M
• B) 0.016 M
• C) 1.8 * 10^-4 M
• D) 1.4 * 10^-3 M
• E) 2.0 * 10^-6 M

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Definitions:

Assignment Statement

Is the act of allocating a particular value to a variable during program execution.

Accumulating Statement

A statement in programming that updates the value of a variable by adding a new value to it.

Postfix Decrement

Postfix Decrement is an operator in programming that decreases the value of a variable by one, after the current operation completes.

Prefix Decrement

Prefix decrement is an operator that decreases the value of a variable by one before the variable is used in an expression.