formulas

specific volume

volume/unit mass

specific gravity

(density of a substance at T and P)/ (density of reference at standard T and P)

limiting reactant

-(nx/ny) fed to (nx/ny) stoich

-(nx/ny)fed < (nx/ny)stoich= x limits

fractional excess

(nA)feed-(nA)stoich/req/(nA)stoich/req

conversion

moles R reacted/moles R fed

selectivity

moles Pd output/ moles PunD in output

yield

moles P in output/ moles R fed

yield of Pd

moles Pd in output/moles R fed

degree of completetion

moles RL reacted/moles RL fed

efficiency

moles Pd in output/moles R reacted

theoretical O2

moles of O2 required by stoichiometry for complete combustion of all fuel

theoretical air

quantity of air that contains theoretical O2

excess O2

amount of O2 in excess of that required for complete combustion

gas density

p= PMW/RT

molar/specific volume

v^= V/n = RT/P

partial pressure

Pi= YiP

real gas

PV= znRT

reduced temp

Tr= T/Tc

reduced pressure

Pr= P/Pc

Kay’s Rule

1. T’c= summation (YiTc,i)

2. P’c= summation (YiPc,i)

3. T’r= T/T’c

4. P’r= P/P’c

5. find z using PV= znRT

specific gravity of a gas

SG= density of a gas/density of air = MW gas/MW air

moles

m/MW

specific gravity of a gas

pgas/pair OR MWgas/MWair