2g of hydrogen reacts with 32g of lithium. what mass of lithium reacts with 6g of hydrogen?
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Moles of Li= 721 =3.0 mol and moles of O 2
= 3232 =3.0 molA. Since, 4 =0.75 mol of O 2 is required, therefore,(1.0−0.75)=0.25 mol of O 2
is in excess. Hence, Li is thelimiting reagent.B. Weight of Li 2 O formed = 23×1×30 =45.0 g Li2 OC. Moles of K=393.9
=0.1 mol and moles of Cl2 = 714.26 =0.06 moSince, 20.1 =0.05 mol of Cl2 is required. Therefore(0.06−0.05)=0.01 mol of Cl2 is in excess.Hence, K is the limiting reagent.
D. Weight of KCl formed =0.1×1×74.5=74.5 g of KCl
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