100 ml of a mixture of NaOH and Na2SO4 is neutralised by 10 ml of 0.5M H2SO4.Hence,NaOH in 100ml solution is :
a) 0.2gm
b) 0.4gm --> answer
c) 0.6gm
d) none
here H2SO4 neutralize only NAOH. Therefore
meq. of naoh= meq. of H2SO4
meq. of naoh= meq. of H2SO4