12.use the equation below to determine the maximum number of grams of ph3 that can be formed when 8.2 g of phosphorus reacts with 4.0 g of hydrogen to form ph3? note that the molar mass of phosphorus is 30.9 g/ mol and hydrogen is 1.008 g/mol.

Answer : The maximum number of grams of formed is, 8.955 g

Solution : Given,

Mass of phosphorous = 8.2 g

Mass of hydrogen = 4 g

Molar mass of = 123.6 g/mole

Molar mass of = 2.016 g/mole

Molar mass of = 33.924 g/mole

The balanced chemical reaction is,

First we have to calculate the moles and

From the reaction, we conclude that

1 mole of react with 6 moles of

0.066 moles of react with moles of

That means the is in excess amount and is in limited amount.

Now we have to calculate the moles of .

As, 1 mole of react to give 4 moles of

So, 0.066 moles of react to give moles of

Now we have to calculate the mass of

Therefore, the maximum number of grams of formed is, 8.955 g