Magnesium metal reacts quantitatively with oxygen to form magnesium oxide, MgO. If 6.21 g of Mg and 6.21 g of O2 are allowed to react. How many grams are in excess?
Magnesium metal reacts quantitatively with oxygen to form magnesium oxide, MgO.
If 6.21 g of Mg and 6.21 g of O2 are allowed to react. How many grams are in excess?
Concept of limiting reagent:
Suppose, in a reaction, X and Y react in a ratio of x : y number of moles, i.e. "x" number of moles of X reacts with "y" number of moles of the Y, and only then the desired product is obtained. But in a certain situation, if X is not available as much as it is required (less than x mole) with Y being y moles, then after the completion of the reaction Y will be left unreacted and the whole of the X would have been consumed. Conclusively, the reason the reaction was ceased is the limited quantity of X. Hence, the limiting reagent is X in this case.
Limiting reagent is that reagent that is present in less than the required quantity and because of that, the reaction ceases.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
