O KINETICS AND EQUILIBRIUM -understanding that no reaction goes to 100% completi

Question

O KINETICS AND EQUILIBRIUM -understanding that no reaction goes to 100% completion Acetylene and oxygen react to form carbon dioxide and water, like this: 2C2H2(g)+5O2(g) ?4CO2(g)+2H2O(g) Use this chemical equation to answer the questions in the table below. Suppose 90.0 mmol of C2H2 and 225. mmol of O2 are added to an empty flask. How much CO2 will be 180. mmol in the flask at equilibrium? Suppose 160. mmol of CO2 and 80.0 mmol of H20 are added to an Some, but less than 80.0 mmol. empty flask. How much C2H2il 80.0 mmol. be in the flask at equilibrium? None. Some, but less than 180. mmol. More than 180. mmol. n None More than 80.0 mmol. Explanation Check

Explanation / Answer

2 moles of acetelyne react with 5 moles of oxygen to give 4 moles of carbon dioxide ideally.now,multiplying the whole previous sentence by 45, we get

90 mmoles of acetelyne react with 225 mmoles of oxygen to give 180 mmoles of carbon dioxide ideally.but as no reaction goes to 100% completion,the carbon dioxide formed will be less than 180 mmoles.

Similarly, *20 of products give *20 reactants,Ideally

but as no reaction goes to 100% completion,the acetylene fomed will be less than 80 mmoles.

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