The square brackets in the formula are used by chemists to represent molar concentration, or molarity: moles of solute per liter of solution.

化学家使用公式中的方括号表示摩尔浓度或摩尔浓度：每升溶液中溶质的摩尔数。

The number of moles of solute that are in a solution is known as it's molar concentration, that's also known as a solution's molarity.

溶液中溶质的摩尔数称为摩尔浓度，也称为溶液的摩尔浓度。

The equilibrium constant, or Keq, is equal to the product of the molar concentration of the products divided by the product of the molar concentration of the reactants.

平衡常数或 Keq 等于产物的摩尔浓度除以反应物摩尔浓度的乘积。

In our case, a mole of hydrogen peroxide weighs 34.014 grams. The number of moles of solute that are in a solution is known as it's molar concentration, that's also known as a solution's molarity.

在我们的例子中，一摩尔过氧化氢重 34. 014 克。 溶液中溶质的摩尔数称为摩尔浓度， 也称为溶液的摩尔浓度。