Which of the following solutions is acidic? (i) 1.0 M NaF(aq) (ii) 0.50 M FeCl₃(aq) (iii) 1.0M Mg(NO₃)₂(aq)
A. Only (i)
B. Only (ii)
C. Only (iii)
D. Only (i) and (ii)
E. Only (ii) and (iii)