Question

To a weighed, clean and dry 1.0 L volumetric flask some pure NH4Cl is added and the flask is reweighed. Then distilled water is added to dissolve NH4Cl and finally enough water is added, with stirring, to bring the solution to the 1 L mark. The flask is reweighed. Data is given below :

• Mass of clean and dry 1 L flask : 224.3 g

• Mass of flask plus NH4Cl : 280.1 g

• Mass of flask plus NH4Cl plus water : 1239.5 g

Which of the following statements concerning the resulting solution is correct?


The molar concentration of NH4Cl is (approx) 5.232 mol/L


The density of solution is 1.72 g/mL


The solution is 22.6% (approx) NH4Cl by mass


The solution is 5.5% (approx) NH4Cl by mass

Answer 1

Answer:

The molar concentration of NH4Cl is (approx) 5.232 mol/L

Explanation:

your answer is option 1