Zadanie 3b
Wzorowane na: Chemistry SL Paper 3, November 2024, pytanie 3(b). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
A conductivity probe is used to follow the concentration of sodium chloride in dilute aqueous solutions. A solution of concentration 0.015 mol dm−3 gives a conductivity of 1.8 mS cm−1. On the axes, draw a graph of conductivity against concentration of sodium chloride. Assume that the conductivity is directly proportional to the concentration and that only the dissolved sodium chloride contributes to it.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
straight line through the origin AND through the point (0.015, 1.8) ✔
«the line also passes through (0.050, 6.0)»
Schemat punktowania
[1] only if both features are shown: a straight line through (0, 0) and passing through the given point.