质量摩尔浓度计算器

计算溶液的质量摩尔浓度(单位:mol/kg)。

mol
kg

质量摩尔浓度

0.5000 m

Molality vs Moles of Solute

公式

How to Calculate Molality

Formula

m = n / w

Where:

  • m = molality (mol/kg)
  • n = moles of solute
  • w = mass of solvent in kilograms
  • Molality does not change with temperature because mass is temperature-independent.

    计算示例

    Dissolve 0.5 moles of glucose in 1 kg of water.

    1. 01m = n / w
    2. 02m = 0.5 mol / 1 kg
    3. 03m = 0.5 mol/kg

    常见问题

    What is molality?

    Molality (m) measures concentration as moles of solute per kilogram of solvent. It is temperature-independent.

    When should I use molality instead of molarity?

    Use molality for colligative property calculations and when working at varying temperatures.

    How do I convert molality to molarity?

    You need the density of the solution. M = m × d / (1 + m × Mw/1000), where d is density and Mw is molar mass of solute.

    学习

    Understanding Molarity

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