Molarity is defined as the total number of moles of solute dissolved in 1 litre of solution.
The formula of Molarity is =
Molarity = Number of Moles of solute / volume of solution (in L)
Number of moles = Mass / Molar mass
Given,
Mass of NaCl = 25 gm
Molar mass of NaCl= 23 + 35.5
= 58.5
So, Number of moles= 25/ 58.5
= 0.427
∴Molarity = 0.427/ 0.3 (in Litres)
= 1.42 mol/ L
Hence, molarity of the given solution is 1.42 mol/ L.
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The total number of moles of solute dissolved in 1 liter of solution is known as molarity.
The value of 6.023 x 1023 is equal to one mole of any substance (Avagadro number). It can be used to quantify the results of a chemical reaction.
Molarity is defined as the number of moles of solute divided by the volume of solution (in L)
Molarity is also known as molar concentration as it measures the concentration of the solution.
Mass / Molar mass = number of moles
Given,
NaCl weight is 25 gram.
NaCl has a molar mass of 23 + 35.5.
= 58.5
Therefore, moles = 25 / 58.5
= 0.427
Molarity = 0.42/7 (in Litres)
= 1.42 mol/ L
As a result, the supplied solution has a molarity of 1.42 mol/L.
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