A laboratory procedure calls for making 400.0 mL of a 1.1 M NaNO3 solution. What mass of NaNO3 (in g) is needed?
Solution 59E Here, we are going to identify whether concentration of a solution is intensive or an extensive property. Also, we are going to differentiate between 0.50 mol HCl and 0.50 M HCl. Step1: Extensive properties are those physical properties which depend upon the amount of the substance present. Example: mass, volume, etc.. Whereas, intensive properties are those physical properties which do not depend upon the amount of the substance present. Example: temperature, pressure, density, etc.. Step2: a) Concentration of a solution is nothing but the measure of amount of the solute(the substance which is dissolved) per volume of the solvent(the substance in which solute is dissolved). With the increase or decrease of amount of solute, the concentration of the solution changes. Thus, concentration of a solution is an extensive property. b) Mol is a unit used to measure the amount of a substance whereas M refers to molarity, which is the unit of concentration of a solution. Thus, 0.50 mol HCl indicates the number of moles of HCl i.e., the amount of HCl whereas 0.50 M HCl indicates the concentration of the HCl solution. It indicates the presence of 0.50 moles of HCl per litre of solution.