0.5grams of a week base BOH present in 50ml solution is titrated with 0.1M HCl. The pH at half - neutralization is found to be ‘9’ and the pH at equivalence point is found to be 5.15. The equivalence conductance of BOH at infinite dilution is 400 S.cm2 eq-1. If the specific conductance of initial BOH (before titration) solution is x×10−4 Scm−1, what is the value of ‘x’