By the way...u guyz missed the working of hydrogen fuel cells with acid electrolyte..
heres. it..
the hydrogen (H2) loses electrons.. 2H2 --> 4H+ + 4e- which travel through the circuit to the cathode and react with O2..also the H+ ions from the acid electrolyte meets the electrons and O2 at the cathode
the reaction
O2 + 4H+ + 4e- = 2H2O
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The H+ ions removed from the electrolyte are replaced by those produced at the anode.
@adorabledaughter - yea..ut u can use the word heat and crystallization point.