Current entering your saliva from one lead creates hydrogen gas, leaving hydroxide ions behind.

电流从导线进入你的唾液中，生成氢气，留下氢氧化物。

If you paid attention, you learned how pure water ionizes to form hydronium and hydroxide ions in reversible reactions.

也会出现0以下或是14以上的时候但那只会出现在一些极端条件下。

Most notably our friend the OH or hydroxide ion.

最值得注意的是我们的朋友 OH 或氢氧根离子。

Reactions at the negative electrode release hydroxide ions (OH–).

负极反应释放出氢氧根离子 (OH–)。

At the positive electrode, the hydroxide ions get used up.

在正极，氢氧根离子用完了。

And that sourness dominates the flavor because while hydroxide ions can taste bitter or soapy, your tongue isn't as sensitive to them.

尝到酸味是因为虽然氢离子可以是苦的或者是肥皂水味的，但是舌头对这些味道并不敏感。

The water and hydroxide ions, by the way, come from a solution of potassium hydroxide.

顺便说一句， 水和氢氧根离子来自氢氧化钾溶液。

See, a few of the molecules in water split up into positively-charged hydrogen ions and negatively-charged hydroxide ions.

看，水中的一些分子分裂成带正电的氢离子和带负电的氢氧根离子。

It either grabs hydrogen off of other molecules, or forms hydroxide ions that can grab free hydrogen ions.

它要么从其他分子中夺取氢， 要么形成可以夺取游离氢离子的氢氧根离子。

So something with a pH of 8 would leave 1 hydrogen ion for every 10 hydroxide ions.

因此，pH 值为 8 的物质每 10 个氢氧根离子就会留下 1 个氢离子。

For example, in a typical alkaline double-A battery, zinc metal reacts with hydroxide ions, changing into zinc oxide and releasing electrons at the negative terminal.

例如，在一个常见的碱性 AA 电池中，锌金属与氢氧离子发生反应，转化为氧化锌，并从电池负极释放电子。

If the solution has a pH of 7, it means that there are an equal number of these hydrogen and hydroxide ions.

如果溶液的 pH 值为 7，则表示这些氢离子和氢氧根离子的数量相等。

And a more extreme base — say, a drain cleaner with a pH of 14 — would leave only 1 hydrogen ion for every 10 million hydroxide ions.

而更极端的碱——比如，pH 值为 14 的排水管清洁剂——每 1000 万个氢氧根离子只留下 1 个氢离子。

You could technically have an even higher pH. A really high concentration of sodium hydroxide in water can have a pH of 15, which means there’s only 1 hydrogen ion for every 100 million hydroxide ions.

从技术上讲，您可以拥有更高的 pH 值。水中非常高浓度的氢氧化钠的 pH 值为 15，这意味着每 1 亿氢氧根离子中只有 1 个氢离子。