Determination of %NH3 in the coordination compound with the empirical formula: Cr,(NH3),CI, 1) A 0.2536 g sample of the coordination compound (CC) was thermally decomposed and the NH3 gas released was collected and reacted with 30.00 mL of 0.3065 M HCI solution (excess reactant). Next, the left over HCl in the solution was back titrated with standardized 0.2816 M NAOH solution. It required 11.92 ml of NaOH to reach the bromcresol green end point. Determine the %NH3 in the CC sample. Show your work below. NH3 (aq) + HCI (aq) → NH,CI (aq) (There is excess HCI left over from this reaction) HCI (aq) + NaOH Jaq) → Naci (aq) + H20 (I) (back titration reaction)

Chemistry: An Atoms First Approach
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Chapter20: Transition Metals And Coordination Chemistry
Section: Chapter Questions
Problem 32E: A coordination compound of cobalt(III) contains four ammonia molecules, one sulfate ion, and one...
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Prelab Assignment: Ammonia Determination
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Determination of %NH3 in the coordination compound with the empirical formula: Cr,(NH3),Cl;
1) A 0.2536 g sample of the coordination compound (CC) was thermally decomposed and the NH3 gas
released was collected and reacted with 30.00 ml of 0.3065 M HCI solution (excess reactant). Next, the
left over HCl in the solution was back titrated with standardized 0.2816 M N2OH solution. It required
11.92 ml of NaOH to reach the bromcresol green end point. Determine the %NH3 in the CC sample.
Show your work below.
NH3 (aq) + HCI (aq) → NH,CI (aq)
(There is excess HCI left over from this reaction)
HCI (aq) + NaOH )aq) → NaCI (aq) + H2O (I)
(back titration reaction)
Transcribed Image Text:Prelab Assignment: Ammonia Determination Name: Determination of %NH3 in the coordination compound with the empirical formula: Cr,(NH3),Cl; 1) A 0.2536 g sample of the coordination compound (CC) was thermally decomposed and the NH3 gas released was collected and reacted with 30.00 ml of 0.3065 M HCI solution (excess reactant). Next, the left over HCl in the solution was back titrated with standardized 0.2816 M N2OH solution. It required 11.92 ml of NaOH to reach the bromcresol green end point. Determine the %NH3 in the CC sample. Show your work below. NH3 (aq) + HCI (aq) → NH,CI (aq) (There is excess HCI left over from this reaction) HCI (aq) + NaOH )aq) → NaCI (aq) + H2O (I) (back titration reaction)
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