Skip to main content

1 L of CO2 is passed through red hot coke. The volume becomes 1.4 L at same temperature and pressure. What is the composition of the product?

When carbon dioxide reacts with red hot coke, carbon monoxide is formed. The balanced chemical equation for this reaction can be written as:


`CO_2 + C -> 2CO`


Here, 1 mole of carbon dioxide reacts with 1 mole of coke to produce 2 moles of carbon monoxide. 


Let us assume that x liters of carbon dioxide are consumed in the reaction, then the remaining volume of carbon dioxide is 1-x liters.


Assuming STP conditions, 1 l of CO2 = 1/22.4 moles


and x l = x/22.4 moles


Using stoichiometry,


x/22.4 moles of CO2 will produce 2x/22.4 moles of CO.


At STP, 2x/22.4 moles = 2x l (1 mole = 22.4 l at STP)


Thus, the final volume of gases will include the leftover CO2 and newly formed CO.


That is, 1-x + 2 x = 1.4 l


or, 1 + x = 1.4


or, x = 0.4 l


and 2x = 0.8 l


Thus, 0.8 l of CO are formed. And 0.6 l (= 1- x = 1- 0.4) of CO2 are left over.


Hope this helps. 

Comments

Post a Comment

Popular posts from this blog

Is there a word/phrase for "unperformant"?

As a software engineer, I need to sometimes describe a piece of code as something that lacks performance or was not written with performance in mind. Example: This kind of coding style leads to unmaintainable and unperformant code. Based on my Google searches, this isn't a real word. What is the correct way to describe this? EDIT My usage of "performance" here is in regard to speed and efficiency. For example, the better the performance of code the faster the application runs. My question and example target the negative definition, which is in reference to preventing inefficient coding practices. Answer This kind of coding style leads to unmaintainable and unperformant code. In my opinion, reads more easily as: This coding style leads to unmaintainable and poorly performing code. The key to well-written documentation and reports lies in ease of understanding. Adding poorly understood words such as performant decreases that ease. In addressing the use of such a poorly ...
Post a Comment
Read more

Is 'efficate' a word in English?

I routinely hear the word "efficate" being used. For example, "The most powerful way to efficate a change in the system is to participate." I do not find entries for this word in common English dictionaries, but I do not have an unabridged dictionary. I have checked the OED (I'm not sure if it is considered unabridged), and it has no entry for "efficate". It does have an entry for "efficiate", which is used in the same way. Wordnik has an entry for "efficate" with over 1800 hits, thus providing some evidence for the frequency of use. I personally like the word and find the meaning very clear and obvious when others use it. If it's not currently an "officially documented" word, perhaps its continued use will result in it being better documented.
Post a Comment
Read more