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31-01-2020
Chemistry

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A solution of H 2 SO 4 ( aq ) with a molal concentration of 1.94 m has a density of 1.119 g / mL . What is the molar concentration of this solution?

Respuesta :

08-02-2020

Answer:

For water should be the same. 1.94 M

Explanation:

Molarity and molality can be the same in some cases. For instance 1 liter of water weighs 1 kg. What is molality? Molality can be defined as the number of moles of substance (known as the solute) that is found in a certain mass of solvent given in kg, that it is dissolved in. The formula for calculating molality is : m = mole solute / kg solvent

However 1.94 m does not make sense with 1.119 density

1.119g/ml= 1119g/1000

1119 g=1000g water + 119g sulfuric acid=

119g/92g/mol=1.29 mol

Therefore= 1.29 molar does not make sense

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