Question

Hello everyone!!
Answer it!! ​

Answer 1

1] H²O +S²O ==>H²SO³

when sulphur dioxide dissolved in water gives sulphurous acid.

______________

2] When iron nail is placed in copper sulphate solution, copper sulphate changes it's colour from blue to light green.

It replaces copper from CuSO⁴.

Answer 2

Answer:

hey mate here is your answer

please refer to my attachment

thank you :)