How can you prepare Cl2 from HCl and HCl from Cl2 ? Write equation only.
Write balanced chemical equation for the reaction between zinc and dilute sulphuric acid. (i) What is the purpose of the contact process? (ii) Name the catalyst used in the contact process. (iii) Write the balanced equation for the reaction in the contact process, which takes place in the presence of catalyst.
Which concentrated acid oxidises sulphur directly to sulphuric acid? Write the equation for the same. What is the name of the process by which sulphuric acid is manufactured? Name the catalyst used in the process.