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Ch.17 - Acids and Bases
Tro - Chemistry: A Molecular Approach 5th Edition
Tro5th EditionChemistry: A Molecular ApproachISBN: 9780134874371당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 5th EditionCh.17 - Acids and Bases문제 57b
17장, 문제 57b

For each strong acid solution, determine [H3O+], [OH–], and pH. b. 0.015 M HNO3

검증된 단계별 안내
1
Step 1: Recognize that HNO3 is a strong acid, which means it completely dissociates in water. Therefore, the concentration of H3O+ ions will be equal to the initial concentration of the acid, which is 0.015 M.
Step 2: Use the relationship between the concentrations of H3O+ and OH- ions in water, given by the ion product of water: Kw = [H3O+][OH-] = 1.0 x 10-14 at 25°C.
Step 3: Calculate the concentration of OH- ions using the formula: [OH-] = Kw / [H3O+]. Substitute the known values to find [OH-].
Step 4: Determine the pH of the solution using the formula: pH = -log[H3O+]. Substitute the concentration of H3O+ to find the pH.
Step 5: Review your calculations to ensure that the values for [H3O+], [OH-], and pH are consistent with the properties of a strong acid solution.

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주요 개념

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

Strong Acids

Strong acids, such as HNO3 (nitric acid), completely dissociate in water, meaning that all the acid molecules break apart into their constituent ions. This results in a high concentration of hydronium ions ([H3O+]) in solution, which is crucial for calculating pH and hydroxide ion concentration ([OH-]).
추천 영상:
가이드 코스
01:09
Strong Acid-Strong Base Titration

pH Calculation

The pH of a solution is a measure of its acidity, calculated using the formula pH = -log[H3O+]. For strong acids, the concentration of hydronium ions is equal to the molarity of the acid solution, allowing for straightforward pH calculations. A lower pH value indicates a more acidic solution.
추천 영상:
가이드 코스
02:15
pH Calculation Example

Water Ion Product

The water ion product (Kw) is the equilibrium constant for the self-ionization of water, defined as Kw = [H3O+][OH-] = 1.0 x 10^-14 at 25°C. This relationship allows for the determination of hydroxide ion concentration ([OH-]) from the known hydronium ion concentration, using the equation [OH-] = Kw / [H3O+].
추천 영상:
가이드 코스
00:53
Production of Hydrogen Example
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