Respuesta :

p
H
≅
4

Explanation:
p
H
=
−
log
10
[
H
3
O
+
]
.
We are given that
[
H
3
O
+
]
=
7.10
×
10
−
5
⋅
m
o
l
⋅
L
−
1
.
And thus
p
H
=
−
log
10
(
7.10
×
10
−
5
)
≅
4

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