Write "TRUE" if the statement is correct. Otherwise, write the correct word/phrase that will make the underlined statement correct.1. The UV-Vis spectrophotometer uses the photometric mode to determine the analytical wavelength of a certain analyte.2. If 15mL of concentrated ammonia is added instead of 10mL, the molar absorptivity of the Cu(NH3)4 2+ complex will increase.3. The y intercept of the calibration curve should have a value close to 0 to ensure the reliability of the calibration curve.

Answered: Vrite "TRUE" if the statement is…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter20: Chemistry Of Selected Transition Elements And Coordination Compounds

Section: Chapter Questions

Problem 44QRT

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31 For the aqueous [Ni(CN)4] complex K₁=2.00 × 10³¹ at 25 °C. .2+ Suppose equal volumes of 0.0052M Ni (NO3), solution and 1.0M KCN solution are mixed. Calculate the equilibrium molarity of aqueous Ni²+ ion. Round your answer to 2 significant digits. M x10 × Ś
a. Compounds 1 and 2 are complex ions of cobalt. 2+ NH2 H2 2+ PMe2 Me2 P H,N. H,N Me,P. Me,P NH2 H2 PMe, Me, 1 2 iv. Compound 2 has a distorted octahedral geometry, with four short and two longer Co-P bond lengths. Use this information to explain whether 2 is a strong or weak field complex, giving your reasoning. Your answer should include a relevant energy level diagram.
For the aqueous s [Ni(CN)4] complex K₂ = 2.00 × 10³¹ at 25 °C. Suppose equal volumes of 0.0096M Ni(NO3), solution and 0.68M NaCN solution are mixed. Calculate the equilibrium molarity of aqueous Ni²+ ion. Round your answer to 2 significant digits. M x10
d. An unknown solution of the Fe-complex has an absorbance of 0.278. What is the concentration of [FeX3] 2+ in the unknown solution? e. If the unknown solution initially contained 1.000 x 10-3 M Fe2+ and 0.1000 M X ligand, what is the Keq of the equation? Hint: An ICE table may be useful here (solve for x)
[Cd(CN)4] complex K₁=6.03 × 10¹8 at 25 °C. x Suppose equal volumes of 0.0086M Cd (NO3), solution and 0.18M KCN solution are mixed. Calculate the equilibrium molarity of aqueous Cd²+ ion. For the aqueous Round your answer to 2 significant digits.
A metal complex, [Y(NH3)6]n+, gives a purple color. Suppose that Y is an unknown metal. A 0.0000258 M standard solution was scanned using UV-vis spectrometer, and the data collected is in Image 1. Four more standard solutions were also scanned at a lambda max which is related to the puple color. The data for this is in Image 2. Question: 1. Determine the lambda max used to read the solutions. How was this obtained? 2. Determine the molar absorptivity coefficient of the metal complex at lambda max using the 5 standard solutions. (Suppose that path length = 1 cm)
For the aqueous [Cd(CN)4]^2- complex =Kf×7.7x10^16 at 25°C.Suppose equal volumes of 0.0010M Cd(NO3)2 solution and 0.84M NaCN solution are mixed. Calculate the equilibrium molarity of aqueous Cd^2+ ion. Round your answer to 2 significant digits.
Calculate the formation constant of the Ni(CN)4* complex at 25°C. 2+ (Hint: Use your Eo tables). 1.4 x 10-39 3.4 x 10-38 O 2.9 x 1037 O 1.1 x 10-22 O 9.1 x 1021 O 3.3 x 1016
Silver and ammonia may react to form Ag(NH₃)₂⁺ complex (Kf = 1.66 x 107). A 500 mL of 0.30mol Ag⁺ and 500 mL of 0.70 mol NH₃ are mixed together.a. Write the complexation reaction.b. Write the formation constant expression.c. What is the concentration of the complex at equilibrium?d. What is the concentration of the metal at equilibrium?
Silver and ammonia may react to form Ag(NH3)2+ complex (Kf = 1.66 x 107). A 500 mL of 0.20mol Ag+ and 500 mL of 0.80 mol NH3 are mixed together.a. Write the complexation reaction.b. Write the formation constant expression.c. What is the concentration of the complex at equilibrium?d. What is the concentration of the metal at equilibrium?
When 0.1 M Cr3+ is added with 20 drops 6.0 M NaOH and 3% H2O2, a yellow solution is observed. Write the net ionic equation associated with the formation of the yellow complex and identify which species is responsible for the color change.
Solid KSCN was added to a 2.25 M Co+ solution so that it was also initially 2.25 M SCN. These ions then reacted to give the complex ion Co(SCN)+, whose formation constant was 1.0 x 10°. What is the concentration of Co²+ (ag) at equilibrium? Be sure to check any simplifying assumption you make. M

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