What Is the Hydroxide-Ion Concentration in a Solution Formed by Combining

question 36

Multiple Choice

What is the hydroxide-ion concentration in a solution formed by combining 200.mL of 0.15 M HCl with 300.mL of 0.090 M NaOH at 25°C? HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

• A) 1.7 × 10^-13 M
• B) 0.090 M
• C) 1.7 × 10^-12 M
• D) 0.054 M
• E) 1.0 × 10^-7 M

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Definitions:

Fatty Acids

Long hydrocarbon chains that are a major component of lipids, serving as energy sources and structural elements in cell membranes.

Monoglycerides

Molecules made of one fatty acid attached to a glycerol backbone, important as emulsifiers in food production.

Small Intestine

A part of the gastrointestinal tract where most of the digestion and absorption of nutrients occurs.

Carbohydrate

Molecule that consists mainly of carbon, hydrogen, and oxygen atoms in a 1:2:1 ratio. A sugar, or a polymer of sugars (e.g., cellulose, starch, glycogen).