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Question
100 ml mixture of Co and CO2 is mixed with 30 ml of oxygen and sparked in a eudiometer tube. The residual gas after treatment with aqueous KOH has a volume of 10 ml which remains unchanged when treated with alkaline pyrogallol. If all the volumes are under the same conditions, point out the correct option(s).
100 ml mixture of Co and CO2 is mixed with 30 ml of oxygen and sparked in a eudiometer tube. The residual gas after treatment with aqueous KOH has a volume of 10 ml which remains unchanged when treated with alkaline pyrogallol. If all the volumes are under the same conditions, point out the correct option(s).
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Solution
The correct options are
A The volume of CO that reacts, is 60 ml
B The volume of CO that remains unreacted, is 10 ml
D The volume of CO2 that gets absorbed by aqueous KOH, is 90 ml
2CO+O2→2CO2 The residual gas is CO.
Volume of CO oxidised =2×30=60 ml; Volume of CO = 60 + 10 = 70 ml
Volume of CO2 formed = 60 ml; Volume of CO2 absorbed by KOH = 3 + 60 = 90 ml
A
The volume of CO that reacts, is 60 ml
B
The volume of CO that remains unreacted, is 10 ml
D
The volume of CO2 that gets absorbed by aqueous KOH, is 90 ml
2CO+O2→2CO2 The residual gas is CO.
Volume of CO oxidised =2×30=60 ml; Volume of CO = 60 + 10 = 70 ml
Volume of CO2 formed = 60 ml; Volume of CO2 absorbed by KOH = 3 + 60 = 90 ml
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