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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Alley on March 26, 2006, 06:18:41 AM

Title: Mass of Product from Mass of Reactant
Post by: Alley on March 26, 2006, 06:18:41 AM
Hey,

I feel silly asking for help on this question but I have spent 2 hours reading and trying to figure it out myself.  Hope you guys can help.

I will type the question and hopefully you can guide me to the correct answer.

Potassium Peroxydisulfate K2S2O8, and important industrial bleaching agent is produced by the reaction (NH4)2S2O8 + 2KHSO4 = K2S2O8 + 2NH4HSO4

What Mass (in grams) of K2S2O8 would be produced when 50.0G OF (NH4)2S2O8 reacts with 50.0g of KHSO4?

I did attempt trying to do it but I could understand the equation or the way of getting it done.  The question before it asked for the Limiting Reagent between (NH4)2S208 and KHS04 which I worked it out to be (NH4)2S2O8.

Can anyone please help?

Thanks Aleysha
Title: Re:Mass of Product from Mass of Reactant
Post by: Borek on March 26, 2006, 06:53:10 AM
Show how you have approached the problem and how you have found out the limiting reagent.
Title: Re:Mass of Product from Mass of Reactant
Post by: Alley on March 26, 2006, 07:16:07 AM
Sorry I am just looking for the equation not the answer it takes me too long to write my explanation for my previous question so thanks anyway i'll just guess it and hope i'm right.

Title: Re:Mass of Product from Mass of Reactant
Post by: Alley on March 26, 2006, 08:51:01 AM
Could you please tell me if this is the correct answer 2.86 x 10-1

Thank you
Title: Re:Mass of Product from Mass of Reactant
Post by: Borek on March 26, 2006, 11:36:24 AM
Quote from: Alley on March 26, 2006, 08:51:01 AM
Could you please tell me if this is the correct answer 2.86 x 10-1

Obviously not, without looking into details. All substances in the question have molar masses in the same range, there are similar amounts of the reagents.  Correct answer will be in the range of tens of grams, not tenths.