If 405 mL of 6.0 M HNO^3 is used to make a 3.1 dilution what is the morality of the dilution

Correct question:

if 405 mL of 6.0 M HNO₃ is used to make a 3:1 dilution what is the morality of the dilution

Answer:

the morality of the dilution is 4 M

Explanation:

Given;

total volume of HNO₃ = 405 mL

concentration of HNO₃ = 6.0 M

dilution ratio 3:1

This dilution ratio implies mixing 2 parts of the solute (HNO₃) with 1 part of solvent (water).

2 parts of HNO₃ will be 270 mL

1 part of water will be 135 mL

morality of the dilution = (270 mL / 405 mL) x 6.0 M

morality of the dilution = 0.6667 x 6.0 M

morality of the dilution = 4 M

Therefore, the morality of the dilution is 4 M