Which best describes a stock solution that is used in a dilution?
a concentrated solution
a solution present in the largest quantity
a dilute solution
a solution present in the smallest quantity

a concentrated solution

Explanation: A stock solution is a concentrated solution which is used to prepare solutions of lower concentrations by diluting it with addition of water.

But on diluting the number of moles remain same and thus we can use molarity equation.

(to be prepared)

where,

=concentration of stock solution

= volume of stock solution

= concentration of solution to be prepared

= volume of  solution to be prepared

1. they vary with a higher number because boiling is way hotter than melting