Question

general chemistry

i need the answer for this problem

See If the reaction below begins with 91.00 g of Cr2O3 and 176 g of silicon, which reactant will run out first? 2Cr2O3(s) + 3Si(s) — 4Cr(s) +3Si0,(s) X X He - o.

Answer 1

If the Reaction Below with glam of croz and 176gm of silicone which Reactant will run out first 208203 (s) + 3 si(s)→ 4 cres) + 3 sio (5) Reactant runs out first called Limiting Reactant it is ' The Reactant in a chemical Reaction That limits The Amount of product That can formed. The reaction will Stop when All of the limiting Reactant is consumed so, first determine Limiting Reactant , From equation:

creos = 151.99 gm.mol → mode cul ar weight (muss) of 51.99 gm.moet, si = 28.08 gmimast! ☆ from equation: 91 goneraz . x 1 mote cro3 x 4 moter x 51.gg gm er E62,2552 gmc . 151.99 am enco a mote oro Imole to • 1 mote si x 4mote Er 1. 176 gon six 2 motes 51.99 am Crit de er x 51.99 gma E 434.48 gm er The Reactant that produces the Lasser Amount of product. In this case. The Crooz. it is a limiting Unit so This Reactant will run out first. 1 mole C 28.08 3 more si gasi