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basic chemistry question ?

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    • Thread Starter

    Please help with the following question ...

    For the reaction S + O2 = SO2
    a) What mass of SO2 is formed by reacting 6.42g of S with O2 ?

    ans: 96.2g

    I struggled with the above answer I kept getting 12.4g if anyone can shed some light on this issue Id be greatly appreciated .

    Kind regards


    how are you getting 12.4? Can you give any details on what you did?

    Also, been a while since I've done these type of problems. But 1mol of S + 1mol O2 = 1mol SO2

    so find out how many moles of S is in 6.42g

    Then that same number of moles of SO2 should be produced (assuming O2 is in excess)

    rearrange n = m/Mr to find out what m (of SO2) is.
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