Zadanie 27
Wzorowane na: Chemistry SL Paper 1A, November 2025, TZ3, pytanie 27. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
Which statement correctly describes a type of electrochemical cell?
A. A secondary cell operates as a voltaic cell when discharging and as an electrolytic cell when it is recharged
B. A primary (voltaic) cell converts electrical energy into chemical energy
C. An electrolytic cell uses a spontaneous redox reaction to generate an electric current
D. A hydrogen fuel cell must be recharged from an external power supply once its reactants are used up
Sprawdź rozwiązanieUkryj rozwiązanieKlucz CKE i punktacja
Odpowiedź z klucza
A ✔
«a secondary (rechargeable) cell releases electrical energy from a spontaneous redox reaction on discharge and the reaction is reversed by an external current on recharging; primary cells and fuel cells convert chemical energy to electrical energy, electrolytic cells do the opposite, and a fuel cell is refuelled, not recharged»
Schemat punktowania
One mark for the correct option.