Question

A reaction requires 0.245 moles of nitrite. If you use a 0.231 M calcium nitrite solution, what volume of this solution is needed?

A) 0.667 mL B) 1060 mL C) 1.5 mL D) 530 mL E) 135 mL F) 234

Answer 1

Answer:

530 ml of this solution is needed.

Hence, Option D) 530 mL. is the correct answer.

Calculation:

The equation for the reaction of calcium nitrite solution is,

So, 2 mol of   produces 1 mol of .

Given moles of nitrite () = 0.245 moles;

So the moles of   =  

And now we can calculate the volume of the solution from molarity;

Or, volume = 0.530 L = 0.530 1000 ml

Hence, volume = 530 ml (Answer).