It’s not neutral, pure water is slightly acidic due to free hydrogen
Comment on Is water an acid or a base?
humanspiral@lemmy.ca 6 days ago
H2O is neutral PH, and so answer is no. But then water tends to have a bunch of shit disolved in it. So answer is yes.
A self-contradicting proposition based on ambiguity of definition of water, of all things. This statement can be used to make HAL explode.
Rob1992@lemmy.world 5 days ago
MunkyNutts@lemmy.world 6 days ago
If you take into consideration the self-ionization of water, it’s both, at the same time.
2 H~2~O -> H~3~O^+^ + ^-^OH
humanspiral@lemmy.ca 6 days ago
AFAIU, it doesn’t change the PH neutrality.
I understand that they self combine/react again? But is that reaction still water?
NielsBohron@lemmy.world 6 days ago
Autoionization and the reverse reaction are constantly happening in water, and when the reaction is happening at the same rate forward and backward the system is said to be “at dynamic equilibrium” (aka, stuff is happening, but there’s no net change)
In pure water, the concentration of hydronium and hydroxide are equal, so it’s said to be neutral. At room temperature, that concentration is approximately 1*10^-7 moles per liter, which gives a pH of 7 (since pH is defined as the negative log _10 of hydronium concentration)