Question #377d6
1 Answer
Dec 21, 2017
Explanation:
- Write the given balanced equation
#2KClO_3->2KCl+3O_2# - Given the mass of
#O_2# , per convention, change it to#"mole"(eta)# through the formula:
#eta=("mass"(m))/("Molar mass"(M))#
#eta=(34cancel(gO_2))/((32cancel(gO_2))/(molO_2))#
#eta=1.0625molO_2# - Now, find the volume O_2 produced with the given values at standard pressure (1 atm.) using the ideal gas formula. The chosen gas constant
#R=(0.0821L*atm)/(mol*K)# .
#PV=etaRT#
#V=(etaRT)/(P)#
#V=((1,0625cancel(mol))((0.0821L*cancel(atm))/cancel((mol*K)))(220+273)cancel(K))/(1cancel(atm))#
#V=43.01L#
