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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: samm on November 29, 2004, 02:12:50 PM

Title: gas volume
Post by: samm on November 29, 2004, 02:12:50 PM

I'd really like help with this, thank you!
i have to work out how much volume of gas is produced by these.

2CuCo₃ ----> Cu₂O + 2CO₂ + 1/2 O₂

CuCO₃ ------> CuO + CO₂

Title: Re:gas volume
Post by: Donaldson Tan on November 29, 2004, 07:58:47 PM

according to the first reaction, 2moles of copper(II) carbonate produces 2.5moles of gas. The second equation tells you that 1 mole of copper(II) carbonate produces 1mole of gas.

It seems that you have 2 conflicting equations because both involve CuCO3. First, decide if the condition of the reaction favours the first or second equation. If both happens, what is the extent of reaction for each of them? What factors account for individual extent of reaction?

Title: Re:gas volume
Post by: jdurg on November 30, 2004, 11:50:21 AM

Also, since there are no masses given for the starting reactant, you will need to give your answer in terms of "X volume of gas per Y moles of reactant".