Предмет: Химия, автор: afinaty4

в пробирку налейте 2—3 мл разбавленного раствора гидроксида натрия и добавьте к нему несколько капель фенолфталеина. затем через раствор пропустите газ(формулу ....

Ответы

Автор ответа: ololoev865
0
NaOH обеспечит малиновую окраску раствора фенолфталеина
2NaOH+CO2=Na2CO3+H2O, в данном случае окраска не изменится, т.к. соль сильного основания и слабой кислоты бущет иметь щелочную среду
При дальнейшем пропучкании образуется гидрокарбонат натрия
Na2CO3+CO2+H2O=2NaHCO3
В данном случае окраска тоже не будет изменятся, по той же причине, что и в первом случае
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Write these sentences using the models of Complex Object.
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Предмет: Математика, автор: 11Prinsesska11