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Whitepunk [10]
3 years ago
12

Calculate the root-mean-square velocity and kinetic energy of co, co2, and so3 at 306 k

Chemistry
1 answer:
zlopas [31]3 years ago
7 0
Data Given;
                    T  =  306 K

                    M.mass of CO  =  28 g/mol  =  0.028 Kg/mol

                    M.mass of CO₂  =  44 g/mol  =  0.044 Kg/mol

                    M.mass of SO₃  =  80 g/mol  =  0.080 Kg/mol

                    Gas Constant  =  R  =  8.314 J/mol.K

Formula used;
                          Vrms  =  \sqrt{3RT/M}

Putting values for CO;

                          Vrms  =  \sqrt{3(8.314)(306)/0.028}

                          Vrms  =  477 m.s⁻¹

Putting values for CO₂;

                          Vrms  =  \sqrt{3(8.314)(306)/0.044}

                          Vrms  =  380 m.s⁻¹

Putting values for SO₃;

                          Vrms  =  \sqrt{3(8.314)(306)/0.080}

                          Vrms  =  282 m.s⁻¹

Kinetic Energy;
                           K.E  =  1/2 mv
²

Putting values,

For CO,
 
                           
K.E  =  1/2 (0.028 Kg/mol) (477 m/s)²

                           K.E  =  1/2 (0.028 Kg) (227529 m²/s²)

                           K.E  =  3185 Kg.m².s⁻²

For CO₂,
 
                           
K.E  =  1/2 (0.044 Kg/mol) (380 m/s)²

                           K.E  =  1/2 (0.044Kg) (144400 m²/s²)

                           K.E  =  3176 Kg.m².s⁻²

For SO₃,
 
                           
K.E  =  1/2 (0.080 Kg/mol) (282 m/s)²

                           K.E  =  1/2 (0.080 Kg) (79524 m²/s²)

                           K.E  =  3180 Kg.m².s⁻²
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