What is exactly the pH value of distilled water?

1.0
7.0
10.0
It depends on the temperature
Pure water is about 7 at 25 °C; this value de­creas­es with in­creas­ing tem­per­a­tures. At 50 °C, it is 6.55. It is also worth to note, that water that has been exposed to air is mildly acidic, because it absorbs carbon dioxide from the air.

Answers distribution

1.0
7.0
10.0
It depends on the temperature
answers
flagPakistan
7%
35%
0%
57%
14
flagFrance
8%
50%
0%
41%
12
flagAustralia
6%
66%
0%
26%
15
flagItaly
13%
40%
6%
40%
15
flagIndia
7%
59%
2%
29%
104
flagthe United States
12%
49%
5%
31%
151
flagUkraine
17%
41%
11%
29%
17
flagNorway
6%
53%
6%
33%
15
flagthe Netherlands
41%
25%
0%
33%
12
flagGermany
25%
39%
3%
31%
63
flagPoland
19%
50%
5%
24%
3930
flagthe United Kingdom
20%
57%
4%
17%
95
flagUnknown
17%
62%
5%
13%
143

Gender

men23%
women21%
1.0
17%
19%
7.0
53%
54%
10.0
5%
4%
It depends on the temperature
23%
21%

Details

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Illustration: Steven Depolo
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