Q: What is the IUPAC name for the compound below? CH2CH3 CH;CHCHCH,CH3 ČH3 O 2-ethyl-3-methylpentane O ...
A:
Q: In a cationic exchange reaction, how many grams of K+ will replace 1 gram of Са?
A: In cationic exchange reaction, 2 moles of k+ will replace Ca2+ (because k has 1 positive charge and ...
Q: When determining the equilibrium concentrations for the reaction [A][B] [AB] AB(g) A(g)+B(g) K. = a ...
A: The equilibrium reaction given is,
Q: Identify the circled functional group. A) carboxylic acid %3D B) ketone C) amide D) ester E) aldehyd...
A: We have to identify the circled functional group.
Q: Question 1 Which of the following statements is true of a 2.5 x 10 M HCl solution? Select all that a...
A:
Q: I am having trouble finding the delta S rxn of ammonium chloride. I am using stand thermodynamic val...
A: To give: The standard entropy values of NH4Cl (s), H2O and NH4OH to calculate the ΔSrxn.
Q: what do we call a substance that is used to reveal whether a chemical is an acid or a base?
A: Substance that is used to reveal whether a chemical is an acid or a base
Q: . Calculate the wavelength (in nm) of the red light emitted by a barcode scanner that has a frequenc...
A:
Q: Below is a diagram showing a typical heating/cooling curve for water. It reveals a wealth of informa...
A: We would use the given heating curve to answer these questions. Note : As you have uploaded mul...
Q: Choose the best Lewis structure for C2H30¯. (It will help to work out the missing formal charges for...
A: The formula of the specie given is C2H3O-. And the possible Lewis structures given are,
Q: Test for Ct ion Take for instance, you have solution of new known test solution, you will add a coup...
A: Halide test We will talk about halide particles (F, Cl, Br, I) tests by utilizing silver nitrate and...
Q: Given the following equilibrium and equilibrium constant: Sb2S3(s) + 3H2lg) = 2Sb(s) + 3H2S(g) K = 3...
A:
Q: Bromocresol Green is an indicator with a pka of 4.9. Its protonated form is yellow and its ionized f...
A: Given, the pKa of bromocresol green = 4.9 The color of its protonated form is yellow and the ionized...
Q: The following IR spectrum corresponds to which compound? Explain. 000 ce 000 Wavenumber, cm Transmit...
A:
Q: . Twenty-five pounds of propane are held in a sealed container at 350 psia. The volume of the contai...
A:
Q: A 1.00 L buffer solution is 0.200 mol L-1 in C6H5COOH and 0.250 mol L-1 in C6H5COOLI. The Ka for C6H...
A: The pH of a buffer solution is calculated using Henderson Hasselbalch equation. Buffers tend to resi...
Q: What will happen to water if 1M of NaCl is added to it? the vapor pressure of water will increase t...
A: To solve this problem we have to know about the given colligative property .
Q: Balance the following reactions and classify each reaction. i. N2 (g) + H2 (g) NH3 (g) ii. Zn (s) ...
A: Types of reaction - There are five common types of reaction 1) Synthesis reaction . 2) Decompositi...
Q: a. Pb2* ion Probable Observation Treatment After heating After adding K2CrO4 b. Ag* ion Treatment Af...
A:
Q: What is the vapor pressure fo the solution composed of 542 mL of water ( Pvapor = 760 mmHg) and 1...
A: Volume of water = 542 ml Mass of water = 542 g Mass of sugar = 12 g Number of moles of water = 542 g...
Q: Calculate the pH of each of the following solutions at 25°C. a. 0.125 M HONH2 (K = 1.1 x 10-8) pH = ...
A: Since you have posted multiple sub-parts questions, as per our company guidelines we are supposed to...
Q: A student carefully places a piece of metal at a temperature of2.0 °C into 50.0 g of water at a temp...
A: Given that Initial temperature of metal = 2.0 °C Initial temperature of water = 65.5 °C Final ...
Q: Give the number of protons, neutrons, and electrons for 240u+6 protons neutrons electrons
A: Calculate number of electron, proton and neutron in 240U+6 ?
Q: If a system has 5.00×102 kcal5.00×102 kcal of work done to it, and releases 5.00×102 kJ5.00×102 kJ o...
A: Given Data : Work done (w) = 5.00 × 102 kcal heat (q) = 5.00 × 102 kJ
Q: 2-chloro-4-nitroacetophenone 2-ethyl-4-oxoheptanal 3-methoxy-4-bromocyclohex-2-enone 1,2-epoxycycloh...
A: The structure of the above compounds are given below
Q: : Synthesis the followiong reactions (five only). 1) Cyclohexyne + 2H, - PI (850-900)C 2) 3) CH,CH,C...
A: As per question guidelines I have solved 5 parts.
Q: The compound you will be investigating in this experiment is the ionic salt barium nitrate, Ba(NO3)...
A:
Q: Consider the following Cu(II) complexes and place them in order of increasing stability. Fully justi...
A:
Q: Chromium reacts with oxygen gas at high temperature according to the equation: 4 Cr(s) + 3 O2(g) → 2...
A:
Q: The preparations of two aqueous solutions are described in the table below. For each solution, write...
A: The answer is as follows:
Q: ssify these structures as bemiacetal, ncetal, or other, Hemiacetal Acetal Other OH HC CH CH3
A: Hemiacetal is formed by the reaction of aldehyde with alcohol .
Q: 1)What is the specific heat if 24.8 g of a metal absorbs 275 J of energy and the temperature rises f...
A:
Q: 3.25 mL of Biomarker A (4.21 x 10-7 mol L-) was brought up to volume with deionized water in a 50 mL...
A: Given data : Initial volume(V1) = 3.25 mL Initial concentration(M1) = 4.21 × 10-7 mol L-1 Final volu...
Q: For the reaction 2NO(g) + O2(g) 2NO2(g) at 750°C, what is the relationship between Kc and Kp? A) Kc ...
A:
Q: For a hydrogen atom, calculate the energy of the photon that would be emitted for the orbital transi...
A: Given, n(initial) = 5 n(final) = 1 Rydberg constant, Rh = 1.09678 × 107 m-1
Q: You make a solution of a weak acid with a pH of 3.75 and the pKa is 5.42 1. Is the solution acidic o...
A: Answer: These questions are based on basic understanding of the solution that contains a weak acid a...
Q: What is the predicted major product for the reaction shown? Fuming H2SO4 ÓCH3 SO3H SO3H SO3H SO3H ÓC...
A:
Q: Indicate the products of the reaction of 2-hexanone with aqueous I2/NaOH and with subsequent hydroly...
A: The ketone having alpha- methyl group reacts with I2 and NaOH followed by little acidic workup to pr...
Q: A student carried out a similar experiment to the one in this lab, but used a hydrate of cobalt (II)...
A: * To determine % error, you will require previously determined value of n also. Then, % error = Prev...
Q: Calculate the energy for each level of the H and He". HYDROGEN Orbit Energy N = 1 n=2 n=3 n = 4 N =5...
A: Only a photon with an energy can be absorbed or emitted when the electron jumps between the n=1 and ...
Q: (a) Give the name of the following metal complexes based on the latest IUPAC nomenclature. 0 (Co(en)...
A: (a) here, as a ligand two ethylene diamine ,two bromide are present. And as an anionic part nitrate ...
Q: Choose the best Lewis structure from those presented below. (It will help to work out the missing fo...
A: Structure A: Nitrogen has 2 bonds + 1 lone pair = 3×2 = 6 electrons. Therefore, nitrogen is not obe...
Q: One QN not allowed. Replace not allowed with one that is allowed? a) n =3; l =3; ml = +2 b) n=2; l=1...
A: Which quantum number is allowed ?
Q: A 17.0 L helium tank is pressurized to 23.0 atm. When connected to this tank, a balloon will inflate...
A: 17.0 L helium tank is pressurized to 23.0 atm. Atmospheric pressure is 1.0 atm. Here we have to...
Q: State three factors that affect the rate of a reaction.
A: Given:- State three factors that affect the rate of a reaction. The rate of the reaction determi...
Q: follow to calculate the value of ΔH° for the reaction: 4 B 2 A + C + 2 F A + 2B E ΔH° =
A: Using Hess's law, Enthalpy of a reaction is always remains constant whether reaction completes in o...
Q: combustion of methane is represented by the equation: CH4 + 2O2 → CO2 + 2H2O
A: Given :- combustion of methane : CH4 + 2O2 ---> CO2 + 2H2O To determine :- Oxidized compound...
Q: After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the...
A: Given, Mass of ice = 9.20kg Heat of fusion of water = 80cal/gm
Q: A local FM radio station broadcasts at a frequency of 96.7 MHz. Calculate the wavelength at which i...
A:
Q: For calculations of gas volume given the reaction takes place at STP why do I have to use Moles= Lit...
A: Ideal Gas Law :- PV = nRT P is the pressure of gas V is the volume occupied by gas n is the numbe...
(a) Sketch the molecular structure of EDTA. Indicate the ligands in your sketch.
(b) Briefly explain how EDTA has strong affinity to heavy metal ions.
(c) Do internet research regarding where EDTA is used and briefly write about your search results.
(d) For the given chelating reaction, find the effective EDTA dose in M (mole/L) to reduce [Pb2+] below 10-15 M. Assume that the initial [Pb2+] is 10-4 M. EDTA + Pb2+ ↔ Pb-EDTA K = 1019.8
Step by step
Solved in 2 steps with 2 images
- Why is the pH of the medium important for the formation of chelated complexes between metal ions and ligands? Choose the best answer: Select one: a. Because the ligands give rise to acid-base reactions that influence the stability of the chelate b. Because if the pH is not very acidic, the ligands do not protonate and the complex cannot form c. Because the pH of the medium is always important for any type of reaction. d. Because in the absence of pH there is no reaction of any kindIn the iron (II)-silver ion system performed in the experiment, all of the following successfully confirmed that each of the chemical species is present in the system EXCEPT. -Formation of white precipitate when HCl was added in the system -Deposition of silvery solids when FeSO4 and AgNO3 were mixed together -Formation of dark blue solution when K3Fe(CN)6 was added in the system -Transformation of pale orange to solution into a blood red solution when KSCN was added in the systemGive an example of a double salt that can be formed via ligand exchange and give the reactions involved
- 7. The stability of metal complexes with EDTA is due to the formation of: A) Zwitterion B) Chelate complex C) Azo dye D) Quinoid structure E) Arylmethane dyeDescribe the principle behind each of the following processes: (i) Vapour phase refining of a metal. (ii) Electrolytic refining of a metal. (iii) Recovery of silver after silver ore was leached with NaCN.A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The analysis of metals was performed using complexation volumetry. Initially, an aliquot of 50.00 mL had its pH adjusted to 1.0 and titrated with a standard 0.03145 mol/L EDTA solution, requiring 6.95 mL to reach the end point. Subsequently, another 25.00 mL aliquot was buffered at pH=5 and titrated with the same EDTA solution, requiring 6.24 mL to reach the end point. Finally, a third aliquot of 25.00 mL was titrated at pH=11, requiring 11.10 mL of the same EDTA solution to complete the titration. Given the molar masses: Fe=55.845 g/mol; Al-26.982 g/mol and Sr-87.620 g/mol. a) Determine the percentage of each of the metals in the sample. b) Explain why the change in pH allows the determination of the three ions in this sample.
- Is it posible to remove 99% of 1.0 μM CuY2- impurity (by reduction to solid Cu) from a 10.0 mM CoY2- solution at pH 4.0 without reducing any cobalt? Here, Y (actually, Y4-) is EDTA and the total concentration of free EDTA is 10.0 mM. Hint: Concepts of Equilibrium of EDTA Complex Formation are involved in the solution of this problem. Standard reduction potentials to use in this problem are:CuY2- + 2e- ➙ Cu(s) + Y4- E°= -0.216 VCo2+ + 2e- ➙ Co(s) E°= -0.282 V.Although Lead and Silver were not directly tested, which metal Pb or Ag is more active? explainWhat are the coordination numbers of cobalt(III), plat-inum(II), and platinum(IV) in complexes?
- Describe the preparation of KMn04 from pyrolusite ore (MnO4). How does the acidified permanganate solution react with the following: (i) Fe2+ ions (ii) Oxalic acid (C2H204) Write the ionic equations for the reactions involved.Nickelocene is paramagnetic with two unpaired electrons. Why is it so? Rationallise it and back up your answers and suggest a bonding scheme, which accounts for the two unpaired electrons. Do start with the symmetry and the molecular orbitals of the Cp- ligand.Using VBT, predict the geometry of the tetraaminocadmium(II) complex ion.