pka value of HNo3 is 3.37 what will be be the pH of 0.01M aqueous solution of HNo3
Answers
Answer:
pH =2
Explanation:
The important thing to keep in mind when dealing with strong acids is that they dissociate completely in aqueous solution to form hydronium ions,
H
3
O
+
, and their conjugate base.
Complete dissociation means that every molecule of acid will ionize, i.e. donate its acidic proton to a water molecule.
That tells you that a strong monoprotic acid will produce hydronium ions in a
1
:
1
mole ratio, that is, every mole of acid will produce one mole of hydronium ions.
http://cikguwong.blogspot.ro/2011/08/chemistry-form-4-chapter-7-strength-of.html
http://cikguwong.blogspot.ro/2011/08/chemistry-form-4-chapter-7-strength-of.html
In this case, nitric acid will dissociate to form
HNO
3(aq]
+
H
2
O
(l]
→
H
3
O
+
(aq]
+
NO
−
3(aq]
This means that the concentration of hydronium ions will be equal to that of the nitric acid
[
H
3
O
+
]
=
[
HNO
3
]
=
0.01 M
As you know, a solution's pH is simply a measure of its concentration of hydronium ions
pH
=
−
log
(
[
H
3
O
+
]
)
In this case, the pH of the solution will be
pH
=
−
log
(
0.01
)
=
2
Answer:
It's answer is second option
Explanation:
2.69 from the above expressions