Question

experiment proving presence of oxygen and nitrogen using sodium hydroxide​

Answer 1

Answer:

Sodium hydroxide is one of the common bases used for leaching amphoteric hydroxides or oxides; for example, alumina which is commonly present in silicate waste rocks. Ammonium hydroxide is used to leach hydroxides of certain transition metals which form metal ammines. Cobalt and nickel are the most well known examples. Ammines are formed by the transfer of lone pair electrons of nitrogen atoms to the ‘d’ orbital of the transition metal