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CarlosMarti12
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Homework Statement
40 cm3 of a gas was exploded with 40 cm3 of oxygen (known to be in excess). Under the conditions used, only hydrogen and carbon monoxide reacted with oxygen. On cooling the mixture to room temperature, the volume was 51 cm3. On adding concentrated KOH, the volume decreased further to 41 cm3 as CO2 was absorbed.
a. Write equations (including the state symbols at room temperature) for the reactions which occur on explosion.
b. What are the relative volumes of gaseous reactants to gaseous products in these reactions?
c. What volume of carbon dioxide is produced?
d. What is the volume of carbon monoxide in the original 40 cm3 of gas?
e. What is the total decrease in volume as a result of the explosion?
f. What decrease in volume is caused by (1) CO and (2) H2 on explosion?
g. What are the volumes of (1) H2 and (2) N2 in the original 40 cm3 of gas?
The attempt at a solution
a. 2 H2 (g) + O2 (g) > 2 H2O (l)
2 CO (g) + O2 (g) > 2 CO2 (g)
b. 2 + 1 : 2 = 3 : 2
I feel like I'm missing something really obvious after that...
40 cm3 of a gas was exploded with 40 cm3 of oxygen (known to be in excess). Under the conditions used, only hydrogen and carbon monoxide reacted with oxygen. On cooling the mixture to room temperature, the volume was 51 cm3. On adding concentrated KOH, the volume decreased further to 41 cm3 as CO2 was absorbed.
a. Write equations (including the state symbols at room temperature) for the reactions which occur on explosion.
b. What are the relative volumes of gaseous reactants to gaseous products in these reactions?
c. What volume of carbon dioxide is produced?
d. What is the volume of carbon monoxide in the original 40 cm3 of gas?
e. What is the total decrease in volume as a result of the explosion?
f. What decrease in volume is caused by (1) CO and (2) H2 on explosion?
g. What are the volumes of (1) H2 and (2) N2 in the original 40 cm3 of gas?
The attempt at a solution
a. 2 H2 (g) + O2 (g) > 2 H2O (l)
2 CO (g) + O2 (g) > 2 CO2 (g)
b. 2 + 1 : 2 = 3 : 2
I feel like I'm missing something really obvious after that...