Question

calculate the mass of oxygen required at STP to convert 36g of graphite into carbondioxide.​

Answer 1

Given : Mass of graphite : 36 gram

Find : Mass of oxygen required to carry out the reaction.

Solution : The reaction of graphite, which is a form of carbon, with oxygen is as follows -

C + O2 --> CO2.

The reaction states that 1 mole of carbon reacts with 1 mole of oxygen to form carbon dioxide.

Number of moles of graphite as per question : 36/12

Number of moles of graphite : 3

As 1 mole of graphite requires 1 mole of oxygen, so 3 moles of graphite will require 3 moles of oxygen.

Weight of 3 moles of oxygen : 3*32 : 96 gram.

Therefore, 96 gram of oxygen will be required.