Therefore, the equilibrium constant is only true for a specific temperature.

因此， 平衡常数仅特定温度。

Fortunately for us, chemists have already figured out the equilibrium constants for most common reactions.

对我们来说幸运的是， 化学家已经计算出大多数常见反应的平衡常数。

You've learned how to calculate an equilibrium constant, Keq.

你已经学会了如何计算平衡常数，Keq。

It's on free energy and the equilibrium constant.

它与自由能平衡常数有关。

Remember that's going to be our equilibrium constant.

请记住，将是我们的平衡常数。

Now we apply these figures to our formula for the equilibrium constant.

现在我们将些数字应到平衡常数的公式中。

And you learned about the equilibrium constant for that reaction, which has a special name: the water dissociation constant.

你不太可能碰到它们——至少我望，像盐酸或硝酸，电离程度很强。

Well the equilibrium constant is going to help there as well.

那么平衡常数也会起到帮助作。

The first and most important thing you need to do equilibrium calculations is the equilibrium constant.

您需要进行平衡计算的第一件也是最重要的事情是平衡常数。

Chemists often know not only the equilibrium constant for a reaction, but also how much of each reactant is available.

化学家不仅知道一个反应的平衡常数，还知道每种反应物有多少可。

And so we can figure out its acid ionization constant, which is essentially an equilibrium constant.

我们就可以算出它的酸离子化常数，它本质上是一个平衡常数。

Well the first thing is the pKa, which is going to be the equilibrium constant.

首先是 pKa，它是平衡常数。

We can measure the equilibrium constant of that.

我们可以测量它的平衡常数。

There's actually a way to determine the equilibrium constant from a measured voltage, and vice versa.

实际上有一种方法可以根据测得的电压确定平衡常数， 反之亦然。

It's going to have its own equilibrium constant.

它将有自己的平衡常数。

Remember that equilibrium constant is simply the products or the concentration of the products divided by the concentration of the reactants.

请记住，平衡常数只是产物或产物的浓度除以反应物的浓度。

Remember that's based on the equilibrium constant.

请记住，是基平衡常数。

Now I gotta point out here that the electrical potential of a redox reaction is related to its equilibrium constant.

现在我要在里指出， 氧化还原反应的电势与其平衡常数有关。

And so we could also use the equilibrium constant of the base.

因此我们也可以使碱的平衡常数。

The symbol for this kind of equilibrium constant is Ka, for an acid, or Kb for a base.

种平衡常数的符号是​​ Ka（酸）或 Kb（碱）。