How to calculate the concentration (w/w%) when 5 g of calcium chloride is dissolved in 25 g of water?
The concentration of a solution of 5g of calcium chloride dissolved in 25g of water is calculated using the formula for weight/weight percent concentration (w/w%), which is (grams of solute / grams of solution) *100%. The result is 16.67 w/w%.
Explanation:
The concentration of a solution is a measure of the amount of solute that is dissolved in a certain amount of solvent. In this case, we're trying to find the weight/weight percent concentration (w/w%) of a solution made by dissolving calcium chloride into water.
The formula for w/w% concentration is (grams of solute / grams of solution) * 100%, where the solution is the combination of the solute (calcium chloride) and solvent (water). So:
(5 g CaCl2 / (5 g CaCl2 + 25 g H2O)) * 100 = 5 g / 30 g * 100 = 16.67 w/w%
So, the concentration of the solution when 5 g of calcium chloride is dissolved in 25 g of water is 16.67 w/w%.