When SO2 is passed through acidic solution of potassium dichromate, then chromium sulphate is formed . Change in valency of chromium is then chromium sulphate is formed . Change in valency of chromium is When SO2 is passed through acidic solution of potassium dichromate November 23, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related