a)Balance the following redox equation in acid. In the blank put the correct sto

Question

a)Balance the following redox equation in acid. In the blank put the correct stochiometric coefficient (0, 1, 2, etc.). (Note: 0 if the species does not appear on that side of the equation.)
___bro3^- +_____n2h4 +_____h+ > _____br^- + ______N2+______h2o

b) select all the processes below that are spontaneous
-freezing of water at temp below 0°C
-dissolving nacl in water
-compression of a gas from a large volume to a small volume
-uniform mixing of h2 and o2
-Boiling of liquid nitrogen at room temp

Explanation / Answer

(a) BrO3- + N2H4 + 2H ------> Br- + N2+ 3H2O

(b) The processes that are spontaneous are

-freezing of water at temp below 0°C
-dissolving nacl in water

-Boiling of liquid nitrogen at room temp.

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