The number of hydrogen ions in 1.0dm\(^3\) of a 0.25 mole tetraoxosulphate(Vl) acid solution is
[Avogadro constant = 6.02 x 10\(^{23}\)]
Given :
Number of moles = 0.25 mole, Avogadro number = 6.02 x 10\(^{23}\) Number of ions = ?
Recall that Number of moles = \(\frac{Number of ions}{Avogadro number}\)
0.25 = \(\frac{Number of ions}{6.02 x 10\(^{23}\)}\)
Number of ions = 0.25 x 6.02 x 10\(^{23}\)
=1.50 x 10\(^{23}\)
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