Zadanie 26
Wzorowane na: Chemistry SL Paper 1, May 2022, TZ1, pytanie 26. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Which procedure is best for converting butan-1-ol into butanoic acid?
A. Heat under reflux with an acidified oxidizing agent
B. Heat under reflux with a reducing agent
C. Heat with an acidified oxidizing agent and distil off the product as it forms
D. Heat with a reducing agent and distil off the product as it forms
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
A ✔
«a primary alcohol is oxidized first to the aldehyde and then to the carboxylic acid; heating under reflux keeps the aldehyde in the flask so that it is oxidized further, whereas distilling it off as it forms would stop the oxidation at butanal; a reducing agent cannot oxidize the alcohol»
Schemat punktowania
One mark for the correct option.