Suggest a suitable indicator for a titration based on each of the following reactions. Use 0.05 M if an equivalence point concentration is needed.
*(a) H2CO3 + NaOH →NaHCO3 + H2O
(b) H2P + 2NaOH →Na2P + 2H2O (H2P = o-phthalic acid)
*(c) H2T + 2NaOH →Na2T + 2H2O (H2T = tartaric acid)
(d) NH2C2H4NH2 + HCl →NH2C2H4NH3Cl
*(e) NH2C2H4NH2 + 2HCl →ClNH3C2H4NH3Cl
(f) H2SO3 + NaOH →NaHSO3 + H2O
*(g) H2SO3 + 2NaOH →Na2SO3 + 2H2O
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