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Chemistry
Chemistry
Problem
Which indicator listed below is the most appropriate for a titration whose equivalence-point pH is 4.7? • Methyl orange,
p
K
a
=
3.5
pK_a = 3.5
p
K
a
=
3.5
• Bromocresol green,
p
K
a
=
4.7
pK_a = 4.7
p
K
a
=
4.7
• Phenol red,
p
K
a
=
7.4
pK_a = 7.4
p
K
a
=
7.4
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