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Postby Ayushi2011 » Sat Oct 05, 2019 3:53 pm

Could someone explain how to find the excess reactant in M5? I'm slightly confused.

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Re: M5

Postby Ami_Pant_4G » Sat Oct 05, 2019 3:59 pm

According to the balanced equation you need triple the moles of ClO2 than BrF3, which means if you have 5 moles of BrF3 you will need 15 moles of ClO2 for the reaction to b maximized. Since the problem states that there are only 12 moles of ClO2 present, that means ClO2 is the limiting reactant, which means BrF3 is in excess. Hope this helps.

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Re: M5

Postby kevinchang_4I » Sat Oct 05, 2019 4:01 pm

We must look at the ratios for this problem. For every 2 BrF3 we use we need 6 ClO2, and vice versa. Since we have 12 ClO2, we need 4 BrF3. Since we have 5 moles, it is our excess reactant.

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