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3. Weigh four samples, each containing enough Na2CO3 to react with ~25 mL of 0.1 M HCl and place each in a 125-mL flask.

3. Weigh four samples, each containing enough Na2CO3 to react with ~25 mL of 0.1 M HCl and place each in a 125-mL flask. When you are ready to titrate each one, dissolve it in -25 mL of distilled water. Add 3 drops of bromocresol green indicator and titrate one rapidly to a green color to find the approximate end point. 2HCI + Na2CO3 CO2 + 2NACI + H20 FM 105.99

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The equation is 2 HCl Na2CO3 CO2 H2O 2NaCl 2 x 3645 10599 2 x 3645 729 g of HCl reacts ... blur-text-image

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