What quantity (in mL) of a 45% acid solution of a monoprotic strong acid must be mixed with a 20% solution of the same acid to produce 800 mL of a 29.875% acid solution?
Option: 1 320
Option: 2 325
Option: 3 316
Option: 4 330
Reactions in Solutions -
It is the amount of solute present in one litre of solution. It is denoted by C or S.
It is the ratio of moles of one component to the total number of moles present In the solution. It is expressed by X for example, for a binary solution with two components A and B.
Here nA and nB represent moles of solvent and solute respectively. Mole fraction does not depend upon temperature as both solute and solvent are expressed by weight.
It is the number of moles or gram moles of solute dissolved per litre of the solution. Molarity is denoted by 'M'.
It is the number of moles or gram moles of solute dissolved per kilogram of the solvent. It is denoted by 'm'.
It is the number of gram equivalents of solute present in one litre of the solution and it is denoted by 'N'.
Relation between Normality and Molarity :
N x Eq wt. = molarity x molar mass
N = molarity x valency
N = molarity x number of H+ or OH- ion
As we have learnt,
Therefore, Option (3) is correct