Hey everyone, i´m new here so im not sure if this is the right place to post this, but it turns out i made laboratory practice where i needed to heat a piece of paper with an aqueous [Co(H2O)6]Cl2 solution (which is pink as a liquid but in the paper turns invisible since its a really light pink), and what happens is that when you heat the paper, it turns blue because the compound dehydrates. I did this with three different types of paper (filter, toilette, and a notebook sheet) and they are asking me to explain why did i get different results with the different types of paper and the thing is I DONT KNOW, because to me, the same thing happened the tree different times i made it, i mean, the solution turned blue when i heated it and turned colourless as soon as i took it off the flame, but aparently there are differences depending on the type of paper and i have no idea of which are they... Is there anyone who could please help me out with this? im lost and i need help ASAP since i have to turn in this paper tomorrow.. THANKS!