Write equations for the reactions of :
(i)iron with steam
(ii)Calcium and potassium with water

Write the equation of the reaction of hydrogen iodide with: Methoxybenzene

Write the reactions of F_2 and Cl_2 with water.

Write the equation of the reaction in biological nitrogen fixation.

Write the balanced chemical equation for the reaction of CI_2 with hot and conc NaOH solution. Justify that this reaction is a disproportionation reaction.

Give the chemical equation for the reaction be-tween a saturated solution of sodium dichro-mate and potassium chloride.