Question

A mixture containing 0.100 mol of NH3 and 0.200 mol of NH4Cl or

A mixture containing 0.0500 mol of NH3 and 0.100 mol of NH4Cl?


1. What is the main focus of the question regarding buffer solutions?
a. Chemical reactions
b. Viscosity properties
c. Buffer capacity comparison
d. Molecular structures

2. Which mixtures are being compared for buffer capacity?
a. Mixture (a) and pure water
b. Mixture (a) and Mixture (b)
c. Mixture (b) and Mixture (c)
d. Mixture (a) and a strong acid

3. What quantities are used to assess buffer capacity in the question?
a. Temperature and pressure
b. Moles of NH₃ and NH₄Cl
c. Color change and odor
d. Concentrations of OH⁻ and H⁺ ions

Answer 1

The student's question focuses on comparing the buffer capacity of two ammonia-based buffer mixtures by assessing the moles of NH3 and NH4Cl used in each.

Step-by-step explanation:

The student's question primarily concerns buffer solutions and their capacity to resist changes in pH upon the addition of small amounts of acids or bases.

Specifically, the student is inquiring about the preparation and properties of ammonia-based buffer systems involving NH3 and NH4Cl.

1. The main focus of the question is on c. Buffer capacity comparison.
2. The mixtures being compared for buffer capacity are b. Mixture (a) and Mixture (b).
3. The quantities used to assess buffer capacity in the question are b. Moles of NH₃ and NH₄Cl.

Buffer solutions are a fundamental concept in acid-base chemistry that involve a weak acid or base and its conjugate salt. This combination helps maintain the pH of a solution despite the addition of small amounts of other acids or bases.