Construct chemical equations from the following visual evidence. Balance the equation also.
When iron (iii) ions are added to iodide ions, the solution gets a deeper brown colour.

Construct chemical equations from the following visual evidence. Balance the equation also. When Kl solution is added to H_2O_2 solution, the brown colour of iodine is seen.

Permanganate ion oxidises iodide to iodine in basic medium. Balance the equation.

What happens when the following process take place? Give chemical equation for the process:- When acidified KMnO_4 added to FeSO_4 solution.

What happens when the following process take place? Give chemical equation for the process:- When H_2S is passed through acidified potassium dichromate solution.

Sodium chloride solution is electrolysed using platinum electrodes. a) Write the chemical equation of the reaction at cathode. b) What happens when phenolphthalein is added to the solution? State the reason?

Fe(NO_3)_3+3KCNSrarrFe(CNS)3+3KNO_3 , This balanced chemical equation is wrote on the black board,when the teacher is going to conduct an experiment on chemical equilibrium: In the above reaction, which chemical has red colour.

a) Identify redox reaction from the following reactions. i) Evaporation of water. ii) Conversion of oxygen to ozone in the upper atmosphere. iii) Formation of nitric oxide from nitrogen and oxygen during lightning. iv) Reaction of 'NaOH' with 'H_2 SO_4' b) Balance the following equation by oxidation number method. 'Fe^(2+)+Cr_2 O_7^(2-)+H^+ rarr F e^(3+)+Cr^(3+)+H_2 O'

Write balanced ionic equation for the reaction of K_2Cr_2O_7 with Na_2SO_3 in acidic medium to form chromium (III) ion and sulphate ion.