Предмет: Химия, автор: MadaraUchihaTop

Определить pH 0.1M раствора уксусной кислоты. а=1, 4%

Ответы

Автор ответа: qeqe2
1

Ответ:

3

Объяснение:

Ka (CH3COOH) = (c(CH3COOH) * a^2) / 1 - a = 0.1 * 0.01^2 / 1 - 0.01 = 1 * 10^-5;

[H^+] = \sqrt{Ka(CH3COOH)*c(CH3COOH)} = \sqrt{10^-5*0.1} = 0,001 моль/л;

pH = -lg([H^+]) = -lg(0.001) = 3

Похожие вопросы
Предмет: Английский язык, автор: Yullwan
пожалуйста помогите с английским

Rewrite the following sentences starting them as suggested below. Don’t forget to make the necessary changes.

1. Some languages are endangered because their number of speakers is decreasing.
If ____________________________________________________________________
2. Internet reaches all corners of the world, so English, the Net language, influences the culture of non-speaking countries.
If ____________________________________________________________________
3. Unless other languages set foot on Internet, English will keep on being global.
If ____________________________________________________________________
4. The world’s linguistic experts are alarmed because many languages are disappearing at an alarming rate.
The world’s linguistic experts _____________________________________________
5. Some tribes are urbanized and assimilated into mainstream, so their languages die out.
If ____________________________________________________________________
6. Youngsters have to learn foreign languages to be able to communicate with people from abroad.
Youngsters ____________________________________________________________
7. The EU is worried about endangered languages, so it has issued a special directive on preserving them.
If ____________________________________________________________________
8. Minority languages aren’t politically tolerated. That’s why they are in jeopardy.
If ____________________________________________________________________
9. The EU corridors are like a Tower of Babel due to the high number of languages spoken there.
If ____________________________________________________________________
10. The English is the language of trade and diplomacy. That´s why it is considered nowadays lingua franca.
If ____________________________________________________________________

Предмет: Музыка, автор: reinosen
Предмет: Русский язык, автор: Аноним