Find out value of 'X'

, Find out the value of 'X'

Find out the value of 'X' :

Find out the value of 'a'.[a=x+y] H_(2)S_(2)O_(8) on completely hydrolysis gives….x…….mole of H_(2)SO_(4)&…..y……."mole of" H_(2)O_(2) .

Find out X:

Find out the value of x in ion [H_(x)O_(4)]^(+) .