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TASChemistryQuick questions

Unit 3: Equilibrium, Acids and Redox

Quick questions on Gas laws and molar volume - TCE Chemistry (Tasmania)

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is molar gas volume?
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At a defined standard condition, one mole of any ideal gas occupies the same volume regardless of identity, because the molecules are so far apart that their own size and identity barely matter. A common value is about 24.8 L mol124.8\ \text{L mol}^{-1} at 25 degrees Celsius and 100 kPa. Always use the molar volume that matches the conditions given on your data sheet.
What are using gas data in reactions?
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Convert a gas volume to moles with n=V/Vmn = V / V_m (or with pV=nRTpV = nRT), use the mole ratio, then convert the product to the quantity asked for.

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