What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?

Mass of hydrogen produced = 2.28 g

Explanation:

Given dа ta:

Mass of tin = 67.3 g

Mass of hydrogen produced = ?

Solution:

Chemical equation:

Sn + 2H₂O → SnO₂ + 2H₂

Number of moles of Sn:

Number of moles = mass / molar mass

Number of moles = 67.3 g / 118.71 g/mol

Number of moles = 0.57 mol

Now we will compare the moles of tin with hydrogen from balance chemical equation.

Sn : H₂

1 : 2

0.57 : 2*0.57 = 1.14

Mass of hydrogen:

Mass = number of moles * molar mass

Mass = 1.14 mol * 2 g/mol

Mass = 2.28 g