Hydrochloric acid is widely used as a laboratory reagent in refining ore for the production of tin and tantalum, and as a catalyst in organic reactions. Calculate the number of moles of HCl in 62.85 mL of 0.453 M hydrochloric acid.
A)28.5 mol
B)1.04 mol
C)0.139 mol
D)0.0285 mol
E)0.00721 mol

Question

Quizplus · Accepted Answer

We can use the formula:
moles = concentration (in mol/L) x volume (in L)
First, we need to convert 62.85 mL to L by dividing by 1000:
62.85 mL ÷ 1000 = 0.06285 L
Now we can plug in the values:
moles = 0.453 mol/L x 0.06285 L
moles = 0.0285 mol
Therefore, the answer is D) 0.0285 mol.

Hydrochloric Acid Is Widely Used as a Laboratory Reagent in Refining