Which statement describes the reactions in an electrochemical cell? 1.Oxidation occurs at the anode, and reduction occurs at the cathode.
2.Oxidation occurs at the cathode, and reduction occurs at the anode.
3.Oxidation and reduction both occur at the cathode.
4.Oxidation and reduction both occur at the anode.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

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