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Help Needed Ideal Gas Impossible!

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Help Needed Ideal Gas Impossible!

Post  surf123 on Mon Jan 18, 2010 2:55 pm

When 0.25g of sodium metal was added to 200cm3 (excess) water, following reaction:

Na+H2O -----> NaOH + 1/2 H2.

I calculated no moles of sodium, which was 0.111, then sodium hydroxide which was 0.0555 Right?

but cannot for the life of me get the answer 132cm3, which is the answer to the volume of gas produced at r.t.p (298k and 100kPa)

Where am i going wrong with re-arranged equation, please help its driving me insane!




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