Предмет: Химия, автор: Zert

При нагревании меди в растворе концентрированной азотной кислоты выделился бурый газ,а после добавления в раствор щелочи образуется осадок голубого цвета. Изменится ли цвет осадка при прокаливании?Запишите уравнение реакции.

Ответы

Автор ответа: SunnySmile

1)Cu + 4HNO3 = Cu(NO3)2 + 2NO2(бурый газ) + 2H2O

2)Cu(NO3)2 + 2NaOH = Cu(OH)2(осадок голубого цвета) + 2NaNO3

при прокаливании образуется черный осадок оксида меди и вода (СuO(черный осадок) + H2O)

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