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Question 2 (3 points)
Based on the equation in Question #1, how many liters of Oz at STP can be produced from 12.0 moles of NaClO3?
оа
Ob
Oc
256 L
259 L
403 L
576 L

Sagot :

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Answer:

Volume of oxygen produced =  403 L

Explanation:

Given data:

Number of moles of NaClO₃ = 12.0 mol

Volume of oxygen produced = ?

Temperature = 273 K

Pressure = 1 atm

Solution:

Chemical equation:

2NaClO₃        →     2NaCl + 3O₂

Now we will compare the moles of oxygen and NaClO₃ .

          NaClO₃       :        O₂

               2            ;         3

            12.0          :       3/2×12.0 = 18.0 mol

Volume of oxygen produced:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

1 atm × V = 18.0 mol × 0.0821 atm.L/mol.K × 273 K

V = 403 L .atm / 1 atm

V = 403 L

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