Question

what is the pH of pure water?

Answer 1

13
7
1
5

Answer 2

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Answer 3

Well let me explain this.

Answer 4

At 100°C, the pH of pure water is 6.14. That is the neutral point on the pH scale at this higher temperature. A solution with a pH of 7 at this temperature is slightly alkaline because its pH is a bit higher than the neutral value of 6.14. so 7 is close

Answer 5

6.14.

Answer 6

thank you

Answer 7

The KW is defined as the product of the concentration of hydrogen ions and hydroxide ions at 25 degrees Celsius.

\[K_{w} = [H^+][OH^-]\]

in pure water, the concentration OF H+ = that of OH-

\[Kw = 1*10^{-14}\]

so

\[[H^+] = 1*10^-7 , pH = -Log[1*10^-7] = 7 \]

so anywhere between 6.14 ~7.

kW is an equilibrium value so it means that it's going to be temperature dependent meaning if we raise the temperature the pH of water will change.