Acetylene reacts with oxygen to form carbon dioxide and water according to the following unbalanced reaction:

c2h2 (g) + o2 (g) → co2 (g) + h2o (g)

if we start with 38.7 g of acetylene and 13.7 g of oxygen, how many grams of the excess reactant are leftover after the reaction is complete?

report your answer to three significant figures.

Mass of excess reactant leftover after reaction is complete = 34.2 g .

Explanation:

Acetylene reacts with oxygen to form carbon dioxide and water, equation given is unbalanced

Firstly equation is balanced:

:

Here we come to know O2 is limiting reactant as it gives smaller amount of So is excess reactant.

Mass of excess reactant utilized:

Mass of excess reactant leftover after reaction is complete:

.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.