Consider two aqueous solutions of nitrous acid (HNO2). Solution A has a concentr
ID: 931637 • Letter: C
Question
Consider two aqueous solutions of nitrous acid (HNO2). Solution A has a concentration of [HNO2]= 0.35 M and solution B has a concentration of [HNO2]= 1.20 M . Part A Which statement about the two solutions is true? Which statement about the two solutions is true? Solution A has the higher percent ionization and solution B has the higher pH. Solution B has the higher percent ionization and the higher pH. Solution A has the higher percent ionization and the higher pH. Solution B has the higher percent ionization and solution A has the higher pH.
Explanation / Answer
SOlution A is 0.35 M HNO2
SOlution B is 1.2 M HNO2.
As concentartion increases degree of dissociation decreases.
Hence SOlution A has shigher percnet ionization.
Now as concentration of HNO2 increases the [H+] will be higher . Hence solution B is more acidic and hence less pH compared to A.
Thus SOlution A has higher percent ionization and higher pH