First step is to calculate the number of moles of magnesium bromide and silver nitrate.
For magnesium bromide,
For silver nitrate,
Limiting reagent is defined as that reagent which is completely reacted during a reaction. Thus during a reaction, the limiting reagent will be the one which is present in smaller amount.
Here since the number of moles of magnesium bromide is less than that of silver nitrate, the limiting reagent will be magnesium bromide.
An excess reagent is the one which is present in excess after the formation of the product. Here the excess reagent is silver nitrate.
This is expressed using the ICE table,
MgBr2(s) | + | 2AgNO3(aq) | Mg(NO3)2(aq) | + | 2AgBr(s) | ||
I | 0.271 moles | 0.588 moles | 0 moles | 0 moles | |||
C | -0.271 moles | -20.271 moles | 0 moles | 0 moles | |||
E | 0 moles | 0.046 moles | 0.271 moles | 0.542 moles |
Thus the moles of excess reactant present in the vessel after the completion of the reaction is 0.046 moles of silver nitrate.
Mass in gram is calculated as,
6. (16 points) Magnesium bromide reacts with silver nitrate to form silver bromide (solid) and magnesium sulfate (a...
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