Question

An experiment requires 42. 5 g of sulfuric acid. Unfortunately, you do not have access to a weighing balance. What volume in ml should be measured out if the density of the sulfuric acid is 1. 84 g/cm3?.

Answer 1

The density of sulfuric acid is given to you in grams per milliliter, $gml^{-1}$. This means that the unit of volume here will be 1 ml .

What is density?

Density is a term used to describe how much space (volume) an object or substance takes up in relation to the amount of matter in that object or substance (its mass). Density is defined as the amount of mass per unit volume.

M = n/V where n is the number of moles and V is the volume in liters,

d = density

= 1.84 g/ml

= 1840 g/L,

Weight of $H_{2} SO_{4}$ is 1840 g in 1 L of solution,

But $H_{2} SO_{4}$ is present 96% by weight in the solution

0.96 x 1840

= 1766.4 g,

So, M

= n/V

= 1766.4/98/1 where 98 is the molar mass of $H_{2} SO_{4}$

Therefore

M = 18.024 mol/L

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