Consider the following species:

CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases

Problem

Consider the following species: (i)

\mathrm{CH}_3^+

, (ii)

(\mathrm{C}_3\mathrm{H}_5)_3\mathrm{Al}

, (iii)

\mathrm{HCHO}

, (iv)

\mathrm{CH}_4

, (v)

(\mathrm{C}_2\mathrm{H}_5)_3\mathrm{N}

, (vi)

\mathrm{TiCl}_4

, (vii)

\mathrm{CO}_2

, (viii)

\mathrm{SiCl}_4

, (ix)

\mathrm{BF}_3

. Find the total number of species that can act as Lewis acids.