Number of moles of ions produced in 8 litres of 0.1M of Potash alum are

K2SO4.Al2SO43.24H2O....Potash Alum ; K2SO4.Al2SO43.24H2O1mole⇌2K+2 moles+2Al3+2 moles+4SO42-4 moles+24H2O ; 1 mole ion  or 1 gram ion=NA ions=6.023×1023 ions ; Total ions/mole=8NA ;       K+ions/mole=2NA;    Al3+ions/mole=2NA;   SO42-ions/mole=4NA; 0.1M=n×18; n=0.8 moles ; 0.8 moles of salt=6.4NAions...6.4 moles of ions ;                              =3.2NA SO42-ions....3.2 moles of ions ;                              =1.6NA K+ions....1.6 moles of ions ;                              =1.6NA Al3+ions ....1.6 moles of ions ;