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Ch.18 - Aqueous Ionic Equilibrium
Tro - Chemistry: A Molecular Approach 5th Edition
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 5th EditionCh.18 - Aqueous Ionic Equilibrium문제 53d
18장, 문제 53d

Determine whether or not the mixing of each pair of solutions results in a buffer. d. 175.0 mL of 0.10 M NH3; 150.0 mL of 0.12 M NaOH

검증된 단계별 안내
1
Identify the components needed for a buffer solution: a weak acid and its conjugate base, or a weak base and its conjugate acid.
Recognize that NH3 (ammonia) is a weak base and NaOH (sodium hydroxide) is a strong base.
Understand that a buffer solution requires a weak base and its conjugate acid, not a strong base.
Calculate the moles of NH3: \( \text{moles of NH3} = 0.175 \text{ L} \times 0.10 \text{ M} \).
Calculate the moles of NaOH: \( \text{moles of NaOH} = 0.150 \text{ L} \times 0.12 \text{ M} \).

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Buffer Solutions

A buffer solution is a system that resists changes in pH upon the addition of small amounts of acid or base. It typically consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffers are crucial in maintaining stable pH levels in various chemical and biological processes.
추천 영상:
가이드 코스
03:02
Buffer Solutions

Weak Bases and Strong Bases

Weak bases, like ammonia (NH3), partially ionize in solution, establishing an equilibrium between the base and its conjugate acid (NH4+). In contrast, strong bases, such as sodium hydroxide (NaOH), fully dissociate in solution, leading to a significant increase in hydroxide ions (OH-). Understanding the behavior of these bases is essential for determining buffer capacity.
추천 영상:
가이드 코스
02:22
Strong vs Weak Bases

Concentration and Volume in Solution Chemistry

The concentration of a solution, expressed in molarity (M), indicates the amount of solute per liter of solution. When mixing solutions, the total volume and the concentrations of the individual components must be considered to determine the final concentrations of the resulting mixture. This is important for assessing whether the mixture can act as a buffer.
추천 영상:
가이드 코스
02:35
Constant-Volume Calorimetry
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교과서 질문

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