Hydrogen gas Dry h
كونان
Ceas
passed over heated
Teadain oxide
in a slightly slanhang glass tube
State wheat
observed
Write equation for the reaction that took place:
Write equation
for the reaction between heated
and
an
Steam
Iron

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.