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Balancing single and double replacement reaction equations

I need to balance this:

H2SO4(aq) + BaBr2(aq)-------> ?

I came up with this:

H2Br2(aq) + BaSO4(aq)

I'm never sure what to do with the subscripts and what state each chemical is in (solid, liquid, gas) after it's balanced.

Thanks in advance!

close,  it would be
        2HBr (aq) + BaSO4(s)

you might want to find a table of solubilities to held you determine what are insoluble percipitates.

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