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Консультация № 109734
16.11.2007, 18:45
0.00 руб.
0
1
1
Зравствуйте! Вроде первый раз не отправилось. Вот такая задача:
С какими из перечисленных ниже веществ может реагировать оксид кальция: HNO<sub>3</sub>, H<sub>2</sub>O, SiO<sub>2</sub>, NaOH, Al<sub>2</sub>O<sub>3</sub>, Bi<sub>2</sub>O<sub>3</sub>, CO<sub>2</sub>, H<sub>2</sub>SO<sub>4</sub>? Напишите уравнения возможных реакций.
Буду благодарен за решение.
С какими из перечисленных ниже веществ может реагировать оксид кальция: HNO<sub>3</sub>, H<sub>2</sub>O, SiO<sub>2</sub>, NaOH, Al<sub>2</sub>O<sub>3</sub>, Bi<sub>2</sub>O<sub>3</sub>, CO<sub>2</sub>, H<sub>2</sub>SO<sub>4</sub>? Напишите уравнения возможных реакций.
Буду благодарен за решение.
Обсуждение
Неизвестный
16.11.2007, 20:42
общий
это ответ
Здравствуйте, piit!
Поскольку оксид кальция - основание, то реагировать он будет с теми веществами, которые способны проявлять кислотные свойства. Это - HNO<sub>3</sub>, H<sub>2</sub>O, SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, CO<sub>2</sub>, H<sub>2</sub>SO<sub>4</sub>.
Уравнения реакций:
CaO + 2HNO<sub>3</sub> = Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O
CaO + H<sub>2</sub>O = Ca(OH)<sub>2</sub>
CaO + SiO<sub>2</sub> = CaSiO<sub>3</sub>
CaO + Al<sub>2</sub>O<sub>3</sub> = Ca(AlO<sub>2</sub>)<sub>2</sub>
CaO + CO<sub>2</sub> = CaCO<sub>3</sub>
CaO + H<sub>2</sub>SO<sub>4</sub> = CaSO<sub>4</sub> + H<sub>2</sub>O
Удачи!
Поскольку оксид кальция - основание, то реагировать он будет с теми веществами, которые способны проявлять кислотные свойства. Это - HNO<sub>3</sub>, H<sub>2</sub>O, SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, CO<sub>2</sub>, H<sub>2</sub>SO<sub>4</sub>.
Уравнения реакций:
CaO + 2HNO<sub>3</sub> = Ca(NO<sub>3</sub>)<sub>2</sub> + H<sub>2</sub>O
CaO + H<sub>2</sub>O = Ca(OH)<sub>2</sub>
CaO + SiO<sub>2</sub> = CaSiO<sub>3</sub>
CaO + Al<sub>2</sub>O<sub>3</sub> = Ca(AlO<sub>2</sub>)<sub>2</sub>
CaO + CO<sub>2</sub> = CaCO<sub>3</sub>
CaO + H<sub>2</sub>SO<sub>4</sub> = CaSO<sub>4</sub> + H<sub>2</sub>O
Удачи!
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