Предмет: Химия, автор: nastish03

Вопрос:
Какой индикатор следует использовать для фиксирования точки эквивалентности при титровании:

Укажите соответствие для всех 4 вариантов ответа:
1) метилоранж (рТ 4)
2) фенолфталеин (рТ 9)
3) крахмал
4) индикатор не нужен

Н2О2 раствором KMnO4 в среде H2SO4
CH3COOH раствором КОН
Йода раствором Na2S2O3
Раствора аммиака раствором Н2SO4

Ответы

Автор ответа: indikot51

1

метилоранж (рТ 4) - Н2О2 раствором KMnO4 в среде H2SO4;

фенолфталеин (рТ 9) - CH3COOH раствором КОН;

крахмал - Йода раствором Na2S2O3;

индикатор не нужен - Раствора аммиака раствором Н2SO4 (титрование кислотой)

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