Explain the cause of the color change observed when HCl is added to the complex ion Cu(NH3)4^2+. Why do different elements produce distinct colors in the flame test? Make sure to include a discussion of electrons in your answer.
What mass of copper is deposited from copper sulfate when a current of 0.22 A is passed through the solution for 15 minutes? Cerium(IV) sulfate acidic solution is used to titrate a solution of hydrogen peroxide, with which it reacts according to \\ 2Ce^...
搜索智能精选 题目下列分子或离子中都存在着配位键的是( )NH3、H2O NH4+、H3O+ N2、HClO [Cu(NH3)4]2+、PCl3 答案B
Universal pH paper is a special type of paper that contains an indicator that can change color when exposed to an acid or base. The colors that the paper can change, depending on the pH, include red, yellow, green, blue, or purple....
Explain why: (a) Co(NH_3)_6Cl_3 is yellow but Co(NH_3)_5ClCl_2 is purple (b) Mn(H_2O)_6BF_4_2 is Colourless c) KMnO_4 is a very intense purple colour Why is aspirin less polar than caffeine? Explain ...