A 01 M H2CO3 B 05 M H2CO3 C 01 M NaCN D 05 M NaCN E 01

A : 0.1 M H₂CO₃
B : 0.5 M H₂CO₃
C : 0.1 M NaCN
D : 0.5 M NaCN
E : 0.1 M NaCl
F : 0.5 M NaCl
G : 0.1 M NaNO₂
H : 0.5 M NaNO₂
I : 0.1 M HClO
J : 0.5 M HClO

Your responses should be a letter (A, B, ...etc.).
Which solution would have the highest pH?
Which solution would have the lowest pH?

Solution

highest pH=B

lowest pH=D