Question

calculate the the molarity of a solution which is prepared by dissolving 28.4g of Na2SO4 in 400 cm^3 of solution

Answer 1

Answer:

This molarity calculator is a tool for converting the mass concentration of any solution to molar concentration (or recalculating the grams per ml to moles). You can also calculate the mass of a substance needed to achieve a desired molarity. This article will provide you with the molarity definition and the molarity formula.To understand the topic as a whole, you will want to learn …

Explanation:

Answer 2

Well, by definition, molarity=

$\frac{ moles \: of \: solute}{volume \: of \: solution }$

Explanation:

Now the moles of solute are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations molality is used in preference, which is defined by the quotient....

$molarity = \frac{moles \: of \: solute}{kilograms \: of \: solvent}$

....this is temperature independent, and at lower concentrations, molarity=molality.

What is molarity?

Molarity is the concentration of a solution expressed as the number of moles of solute per litre of solution.

Explanation:-

To get the molarity, you divide the moles of solute by the litres of solution.

For example, a 0.25 mol/L NaOH solution contains 0.25 mol of sodium hydroxide in every litre of solution.

To calculate the molarity of a solution, you need to know the number of moles of solute and the total volume of the solution.

To calculate molarity:

1. Calculate the number of moles of solute present.
2. Calculate the number of litres of solution present.
3. Divide the number of moles of solute by the number of litres of solution.

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