What Is the Concentration of Hydroxide Ions in Pure Water

question 25

Multiple Choice

What is the concentration of hydroxide ions in pure water at 30.0 °C if K_w at this temperature is 1.47 × 10^-14?

• A) 1.00 × 10^-7 mol L^-1
• B) 1.30 × 10^-7 mol L^-1
• C) 1.47 × 10^-7 mol L^-1
• D) 8.93 × 10^-8 mol L^-1
• E) 1.21 × 10^-7 mol L^-1

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Definitions:

Aqueous Solution

A solution in which water is the solvent.

pH

A measure of the acidity or alkalinity of a solution, defined as the negative logarithm of the hydrogen ion concentration.

Alanine

A non-essential amino acid used in protein synthesis, involved in glucose metabolism and immune system function.

Fischer Projection

A method to represent molecules in 2D by projecting three-dimensional configurations.