Limiting Reagent (Kaplan Error?)

[EgyptianDoc]

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Balanced equation: 2AgNO3 + MgCl2 --> 2AgCl + Mg(NO3)2

If 340g AgNO3 and 285g MgCl2 react, what is the limiting reagent?

MM AgNO3 = 170 g/mol
MM MgCl2 = 95 g/mol

mol AgNO3 = 340g / 170g/mol = 2 mol
mol MgCl2 = 285g / 95g/mol = 3 mol

Since 2 mol of AgNO3 are needed to react with every 1 mol MgCl2, wouldn't AgNO3 be the limiting reagent since you will have an excess 2 mol of MgCl2 after the reaction? Kaplan says MgCl2 but this doesn't seem right to me. Is my logic flawed or is this a Kaplan error?

 

[ezsanche]

You are right. Kaplan made a mistake.

 

[EgyptianDoc]

Thank you for the reassurance! 🙂

 

[fbradley99]

what kaplan book is this in??? 2009 or a prior one.