【Daily Question】June 14, 2018 – Participate to earn +2 wealth； +3 to +10 wealth for correct answers

2018-06-14View Original

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Fill-in-the-blank: In the double-indicator method for determining mixed bases, when phenolphthalein indicator is added, the volume of HCl standard titrant required is 15.20 mL； By adding methyl orange as an indicator and continuing the titration, an additional 25.72 mL of the HCl standard solution was consumed; therefore, what is present in the solution is ( ). Na2CO3 + NaHCO3

Reply #22018-06-14

Na2CO3+NaHCO3

Reply #32018-06-14

Na2CO3+NaHCO3

Reply #42018-06-14

Na2CO3 + NaHCO3

Reply #52018-06-14

Na2CO3+NaHCO3

Reply #62018-06-14

Na2CO3+NaHCO3

Reply #72018-06-14

Na2CO3 and NaHCO3

Reply #82018-06-14

Na2CO3+NaHCO3

Reply #92018-06-14

Sodium bicarbonate (NaHCO3)

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【Daily Question】June 14, 2018 – Participate to earn +2 wealth； +3 to +10 wealth for correct answers

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