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A solution containing Na2CO3 and NaOH requires 300 mL of 0.1 N HCl using phenol- phthalein as in indicator. Methyl orange is then added to above titrated solution when a further 25 mL of 0.2 NHCl is required. The amount of NaOH present in solution is [NaOH = 40, Na2CO3 = 106] (a) 0.8 g (b) 1.0 g (c) 1.5 g (d) 2.0 g
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