Q. 784.1( 9 Votes )

Magnesium and oxygen combine in the ratio of 3 : 2 by mass to form magnesium oxide. What mass of oxygen gas would be required to react completely with 24 h of magnesium?

Answer :

According to question-


i.e. three equivalents of Mg reacts with 2 equivalents of O2 to form 1 equivalent of MgO.


When mass of Mg = 3x = 24 gm


So, x = 8 gm


Then, mass of oxygen required = 2x = 16 gm


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