1.

How many oxides are soluble in moderaterly concentrated aqueous solution of NaOH. {:(SO_3",",Cl_2O_7",",N_2O_5",",CO),((1),(2),(3),"(4)"),(K_2O",",Cr_2O_3",",BaO",",GeO_2),((5),(6),(7),"(8)"):}

Answer»


Solution :`SO_2 ,Cl_2O_7, N_2O_5, GeO_2` Acidic
`Cr_2O_3` Amphoteric
`K_2O` Bao Basic
CO , Neutral
Reactions :
`SO_2+2NaOHtoNa_2SO_4+H_2O`
`Cl_2O_7+2NaOHto2NaClO_4+H_2O`
`N_2O_5+2NaOHto2NaClO_4+H_2O`
CO+NaOH`to` No reaction
`K_2O+NaOHto` No reaction but `K_2O+H_2Oto2KOH`
BaO+NaOH`to` No reactionbut BaO +`H_2OtoBa(OH)_2`
`Cr_2O_3+2NaOH+3H_2Oto2Na(CR(OH)_4]`
`GeO_2+2NaOHtoNa_2GeO_3+H_2O`


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