Physical Chemistry EXAM 1 EQUATIONS 100% Accurate!!

Physical Chemistry EXAM 1
EQUATIONS 100% Accurate!!
pV=nRT - ANSWER p= pressure (kpa)

V= volume (L)

n= number of moles (mol)

R= gas constant (8.314 kpa-L/mol-K)

T= temperature (K)



w= -nRT ln (Vf/Vi) - ANSWER w= work (J)

n= number of moles (mol)

R= gas constant (8.314 kpa-L/mol-K)

T= temperature (K)

Vf/Vi= final volume/initial volume (L)



w= -Pex(delta V) - ANSWER w= work (J)

Pex= external pressure

delta V= change in volume (L)



delta H= nCpm(delta T) - ANSWER delta H= change in enthalpy (J/kg)

n= number of moles (mol)

Cpm= molar heat capacity at constant pressure (J/K/mol)

delta T= change in temperature (K)



Cpm-Cvm= R - ANSWER for PERFECT GASES, Cpm-Cvm=R

for LIQUIDS/SOLIDS, Cpm~Cvm



delta U= q + w - ANSWER delta U= change in internal energy (J)

q= heat (J)

w= work (J)