Question 901
What is the color of the K2MnO4 formed during the preparation of potassium permanganate according to the text?
Question 902
What is the main product formed when manganate ions (MnO4^2-) disproportionate in neutral or acidic solution according to the text?
Question 903
What is the oxidation state of iron in the product when iron(II) is oxidized by acidified dichromate?
Question 904
What is the oxidation state of tin in the product when tin(II) is oxidized by acidified dichromate?
Question 905
What is the main reason for the interconversion between chromate and dichromate ions in solution?