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Byju's Answer
Standard XII
Chemistry
Basic Buffer Action
The pH of bas...
Question
The pH of bases lies between 7 and ____.
14
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Solution
The correct option is
A
14
pH is a numerical value ranging from 0 to 14 that indicates whether a given substance is acidic, basic or neutral.
pH between 0-7 implies acidic substance
pH = 7 implies neutral substance
pH between 7-14 implies basic/alkaline substance
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Similar questions
Q.
Choose the correct from the following:
(i) Salt of a strong acid and a strong base are neutral with pH value of 7.
(ii) Salt of a strong acid and a weak base are basic with pH value more than 7.
(iii) SaIt of a weak acid and a strong base are acidic with pH value less than 7.
Q.
Assertion :The
p
H
of
N
H
4
C
l
solution in water is less than
7
and pH of
C
H
3
C
C
O
O
N
a
solution is more than
7
. Reason:
N
H
4
C
l
is a salt of weak base
N
H
4
O
H
and strong acid
H
C
l
whereas
C
H
3
C
O
O
N
a
is a salt of a weak acid
C
H
3
C
O
O
H
and strong base
N
a
O
H
.
Q.
Assertion: The buffer HCOOH/HCOONa will have pH lesser than 7.
Reason: Conjugate base of a weak acid is a strong base.
Q.
10
−
6
M NaOH is diluted 100 times. The pH of the diluted base is
Q.
The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic. It is carefully regulated by a number of homeostatic mechanisms, which exert their influence principally through the respiratory system and the urinary system in order to control the acid-base balance and respiration. What is the normal pH level of blood of a normal person?
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