Interpretation:
Amount of CaCl2 is to be calculated to prepare 500 mL of 0.20 M CaCl2 solution.
Concept introduction:
The concentrations of solutions are expressed in different ways, all of them involved in the quantity of solute and the quantity of solution or solvent. Among them, molarity is widely used to express the concentration of solution. Molarity: Molarity is defined as the number of moles of solute present in one litre of the solution In expression,
Again
Answer to Problem 21PP
11.1 gm of CaCl2 is needed to make 500 mL of 0.20 M CaCl2 solution.
Given information:
Molarity of
Volume of
Explanation:
Write the expression for the molarity of solution:
Substituting the values:
Number of moles of
Again
Thus, the mass of
Explanation of Solution
Given information:
Molarity of
Volume of
Write the expression for the molarity of solution:
Substituting the values:
Number of moles of
Again
Thus, the mass of
Chapter 14 Solutions
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