Iodine is heated with concentrated nitric acid: $\mathrm{I}{}_2+\mathrm{HNO}{}_3\to \mathrm{HIO}{}_3+\mathrm{NO}{}_2+\mathrm{H}{}_2\mathrm{O}$. The number of moles of $\mathrm{NO}{}_2$ evolved per mole of $\mathrm{I}{}_2$ oxidised is

More questions on Nitrogen compounds: ammonia, oxides of nitrogen, nitric acid

• Nitrogen has an oxidation state of +1 in NEET level
• Copper reacts with cold dilute nitric acid as 3Cu + 8HNO3 -> 3Cu(NO3)2 + 2NO + 4H2O. The ratio of moles of HNO3 acting as an acid to moles a... JEE Main level
• Zinc reacts with dilute nitric acid to give Zn(NO3)2, N2O and water. The number of electrons gained by nitrogen per molecule of N2O formed i... JEE Main level
• When excess aqueous ammonia is added to aqueous copper(II) sulphate, the deep blue colour arises from JEE Main level
• Ammonia is present in excess and is treated with chlorine: NH3 + Cl2 ->. The products are JEE Main level
• Ammonium nitrate is heated gently to about 520 K. The gas evolved and the oxidation state of nitrogen in it are JEE Main level