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Calculate the molar concentration of a 5.40 L solution that contains 38.5 g of dissolved sodium hydrogen carbonate.

Answer :

Molar concentration is defined as the concentration of a solution expressed in moles of solute per liter of solution. The unit of molar concentration is mol/L or M. It is a standard unit of measurement in chemistry that represents the amount of a substance in a given volume.

Given data Volume of solution = 5.40LSodium hydrogen carbonate = 38.5gFormula weight of NaHCO3 = 84.01 g/molWe need to calculate the molar concentration of the given solution. To calculate the molar concentration, we need to find the moles of the solute. Then we can divide the moles of solute by the volume of solution in liters. Moles of NaHCO3 = mass of NaHCO3 / formula weight of NaHCO3= 38.5 g / 84.01 g/mol= 0.458 moles Now, we can calculate the molar concentration as follows

Molar concentration = moles of solute / volume of solution in liters= 0.458 moles / 5.40 L= 0.0846 mol/L or 0.0846 MTherefore, the molar concentration of the given solution is 0.0846 M. Molar concentration is the amount of a solute that is present per liter of a solution. It is measured in mol/L or M. To calculate the molar concentration of a solution, we need to know the volume of the solution and the mass of the solute that is dissolved in it.We can find the moles of the solute by dividing its mass by its formula weight. Once we have the moles of the solute, we can calculate the molar concentration by dividing the moles of the solute by the volume of the solution in liters.

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