What do you see when concentrated sulphuric acid is added to copper sulphate 5-water?
Blue crystals changes to blue powder
Blue crystals changes to white powder
Blue crystals changes to green powder
Blue powder changes to blue crystals
Blue powder changes to white crystals
The blue coloured hydrated copper(II) sulphate turns white due to loss of water of crystallization.
What do you see when concentrated sulphuric acid is added to copper sulphate-5-water. (You are not required to say what is happening, nor is it necessary to name the products.)
Why is dilute sulphuric acid used in place of concentrated sulphuric acid to prepare copper sulphate?
What would you observe in the following cases? (i) Sulphur trioxide is dissolved in water on a large scale. (ii) Concentrated sulphuric acid is added to equal volumes of cold water. (iii) 100 ml of 98% sulphuric acid is kept open. (iv) Hot concentrated sulphuric acid is added to sodium chloride crystals. (v) Dilute sulphuric acid is added to ferrous sulphate solution.