20 cm3 of 0.09 mol dm3 solution of tetraoxosuiphate (Vi) acid requires 30cm3 of sodium hydroxide solution for complete neutralization. The molar concentration of sodium hydroxide is [H = 1; S = 32; 0 = 16; Na = 23]
-
A.
0.03 mol dm3 -
B.
0.12 mol dm3 -
C.
0.27 mol dm3 -
D.
0.45 mol dm3 -
E.
0.90 mol dm3