Which pair of substances can be dissolved together to prepare a buffer solution?
CH3COOH | CH3COONa | NaOH | HCl | NaCl |
(i) | (ii) | (iii) | (iv) | (v) |
(a) i/ii
(b) i/ii, i/iii, ii/iv
(c) i/ii, i/iii, ii/iii, iv/v
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