What volume of hydrogen was released when adding zinc weighing 10 g to a solution

What volume of hydrogen was released when adding zinc weighing 10 g to a solution containing sulfuric acid weighing 30 g.

Zn + H2SO4 = ZnSO4 + H2.

In order to find the volume of hydrogen, we first determine its mass. To do this, you need to understand which of the reagents is given in the deficiency, and then count on it. Let’s make the proportion:

30 g – x g

98 g – 65 g

Hence x = 20 g is the mass of zinc reacting with 30 g of sulfuric acid. It is obvious that zinc is deficient. Now let’s determine the mass of hydrogen:

10 g – y g

65 g – 2 g.

Y = 0.3 g.

Then the amount of hydrogen substance:

n = m / Mr = 0.3 / 2 = 0.15 mol.

Knowing that 1 mole of gas at normal conditions occupies a volume of 22.4 liters, we define V:

V = 0.15 * 22.4 = 3.36 l.