Question

How much H2O is produced when 20000 g of C2H2 burns completely? Answer in units of g.

Answer 1

Answer:

Explanation:

H  = 1

C = 12

O = 16

Acetylene, HC≡CH = 2+24 = 26

H2O = 2 + 16 = 18

In XS oxygen, one HC≡CH yields one H2O

26 g HC≡CH  ==> 18 g H2O

2000 g HC≡CH ==> 2000*18/26 g H2O =  1384.6154 g H2O

Answer 2

From the data provided, the mass of H₂O is produced when 20000 g of C2H2 burns completely is 13846.14 g.

What is the amount of H2O produced in the combustion of 20000 g of C2H2?

The equation of the reaction is given below:

• 2 C₂H₂ + 5 O₂ ----> 2 H₂O + 4 CO₂

From the equation of the reaction, 2 moles of C₂H₂ produces 2 moles of H₂O.

Moles of C₂H₂ in 20000 g = mass /molar mass

molar mass of C₂H₂ = 26 g

moles of C₂H₂ = 20000/26

moles of C₂H₂ = 769.23 moles

Therefore moles of H₂O produced is 769.23 moles.

Mass of H₂O = moles * molar mass

molar mass of H₂O = 18.0 g

mass of H₂O = 769.23  * 18

mass of H₂O produced = 13846.14 g

Therefore, the mass of H₂O is produced when 20000 g of C2H2 burns completely is 13846.14 g.

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