Experiment 5 Don't Get Stressed

I keep asking for help and Im getting rejected someone please help me I'm very confused Lab 1: Equilibrium Constant Determination   You will have to determine the equilibrium constant for the reaction between aqueous iron(III) ion and thiocyanate ion. The equilibrium equation is given below: Fe3+ (aq) + NCS– (aq) <---> FeNCS2+ (aq) yellow          colorless             red The absorbance of light is measured using a spectrophotometer. The higher the absorbance, the higher the concentration of FeNCS2+ present. At room temperature, 5.00ml of 0.200M iron(III)nitrate solution was mixed with 5.00ml of 0.200M potassium thiocyante solution. The absorbance of this mixture was 0.55. A 1cm thick cuvette was used. 1- What is the Beer-Lambert Law? The Beer-Lambert Law relates the attenuation of light to the properties of the material through which the light is travelling. In other words “The path length and concentration of a chemical are directly proportional to its absorption of light.” A…

What is the Kf expression for the following complexation reaction? Al* (aq) + 6F (aq) TAIF* (aq) Select one: | AIF| K = Al- || F]° A. | AIF ° | A || F| K = | A13+ ][ F| Kf = | AIF,3- 1 C. | AP || F]° Kf = | AIF-| D. B.

quoticnt ,Qc , and the equi librium cons tant follo wing Write the readion kC. for each of the reactions. 2Na cs) + 2 H 20 (1) -7 a NaOH (ag) + Ho ca)

It takes 60 mL of 0.20 M of sodium hydroxide (NaOH) to neutralize 25 mL of carbonic acid (H2CO3) for the following chemical reaction: 2 NaOH + H2CO3 N2CO3 +2 NaOH The concentration of the carbonic acid is O 0.96 M O 0.24 M O 0.10 M O 0.48 M https://prodpcx-cdn-learnosityassessmentviewer.emssvc.connexus.com/index.html# Type here to search

CuCl has a Ksp equal to 1.2 x 10-6. A 1.0 L saturated solution of CuCl contains a concentration of Cu+ equal to 1.1 x 10-3 M. If 500 mL of water is evaporated from the solution, what will be the concentration of Cu+ after equilibrium is reestablished? (Hint: Think about Qsp vs Ksp.)     5.5 x 10-4 M     1.1 x 10-3 M     2.2 x 10-3 M     0 M (no ions will be in solution)

What are the Initial Concentrations of Fe3+ and SCN-? Fe3+ (aq) + SCN– (aq) à FeSCN2+ (aq) Flask # 0.2 M Fe(NO3)3 in 0.50M HNO3 0.50M HNO3 2.00 x 10–3 M KSCN in 0.50M HNO3 Initial [Fe3+] Initial [SCN-] Initial [FeSCN2+] Blank 5 mL 5 mL 0 mL       1 5 mL 4 mL 1 mL       2 5 mL 3 mL 2 mL       3 5 mL 2 mL 3 mL       4 5 mL 1 mL 4 mL       5 5 mL 0 mL 5 mL       Show a sample dilution calculation for flask 1. Hint: M1V1 = V2V2

10. After reading the introduction, what are the confirmatory test for the following, describe what is to be done and what would you expect to see in a positive test? • Fe Ni c. Cu2 d. Li e. Pb 2

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Try Again Check your exponents. Write the concentration equilibrium constant expression for this reaction. 3 1₂(s) + 2 Cr³+ (aq) + 7 H₂O(1)→ Cr₂O² (aq) +61¯ (aq) + 14 H* (aq) [₂0][₁][H]¹⁹ 3+ [¹] Η + 19 X Ś 00

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If you could please help me answer these I would be very grateful!

Lab 1: Equilibrium Constant Determination   You will have to determine the equilibrium constant for the reaction between aqueous iron(III) ion and thiocyanate ion. The equilibrium equation is given below: Fe3+ (aq) + NCS– (aq) <---> FeNCS2+ (aq) yellow          colorless             red The absorbance of light is measured using a spectrophotometer. The higher the absorbance, the higher the concentration of FeNCS2+ present. At room temperature, 5.00ml of 0.200M iron(III)nitrate solution was mixed with 5.00ml of 0.200M potassium thiocyante solution. The absorbance of this mixture was 0.55. A 1cm thick cuvette was used. The Beer-Lambert Law relates the attenuation of light to the properties of the material through which the light is travelling. In other words “The path length and concentration of a chemical are directly proportional to its absorption of light.” A = ԐCl Slope= 5420.3 A =A0 + ԐCl The slope is Ԑl. Both the slopes will equal. Ԑl = 5420.3 the cuvette is 1 cm in diameter…

Barium sulphate is a relatively insoluble salt used for medical radiographs of the gastrointestinal tract: BaSO4 (s) Ba2+ (aq) + SO4²- (aq) The concentration of Ba2* ions in a saturated aqueous solution is 1.05x105 M. Determine Ksp for barium sulphate dissolving in water. O 1.10 x 10-25 1.12 x 10-5 O 2.12 x 105 O1.05 x 10-25 O 1.10 x 10-10

What is the expected multiplicity for the highlighted protons? dectet quartet septet singlet triplet 7= H H