How many molecules of co2,h2o,c3h8, and o2 will be present if the reaction goes to completion?

Asked by maham237 @ 25/12/2020 in Chemistry viewed by 352 People

Answered by maham237 @ 25/12/2020

Let initially there are 10 molecules of O2 and 3 molecules of C3H8 present

The reaction will be

C3H8(g) + 5O2(g) ----> 3CO2(g) + 4H2O

so here oxygen molecules are limiting as for 3 molecules of C3H8 we need 15 molecules of O2

now the given 10 molecules of O2 will react with only 2 molecules of C3H8 and they will form six molecules of CO2 and 8 molecules of H2O

Hence answer is

molecules of CO2 formed = 6

Molecules of H2O formed = 8

molecules of C3H8 left = 1

molecules of O2 left = 0

C3h8 o2 co2 h2o

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