When prepoaring solution for UV spectroscopy, the more polar the solvent is the better.for higher cutoffs O True O False

Q: Find the activity coefficient using the Debye-Huckel equation for Be²* if µ = 0.075. Assume the ion-...

A:

Q: For the reaction below which of the statements is correct? A+ 2B → 3C O The reaction is second-order...

A: Rate law is determined by slow step of the mechanism of the reaction.   

Q: Draw structural formulas for the following the compounds:    (a) Cis-1,3-diphenylcyclohexane      ...

A:

Q: Rank the following compounds in order of increasing stability

A: According to Huckel's rule, a conjugated compound is said to be aromatic if it has (4n + 2)π electro...

Q: Br e LOCH3

A: The solution is given below - 

Q: SO3H ? ČH2-CH3

A: The answer is given below

Q: A solution of iodine in carbon tetrachloride has a density of 3.22g/mol and a concentration of 3.00 ...

A:

Q: Use the inscribed polygon method to draw the molecular orbital diagram for the compounds shown below...

A: Aromatic compound is more stable than antiaromatic compound... Aromatic compound follow (4n+2) pi el...

Q: CH3CH2CH2CI CH3 AICI3 CH2CH2CH3 CH ČH3 I II :0:

A: The major product is:  

Q: Three labs were contracted to measure the concentration of a 5.50 ppm Ca2+ standard solution. They e...

A: For the problem we have to find out which lab measurements is most accurate result and which one has...

Q: Which of the following compound has the central atom with +1 formal charge? O PCI6 O XEF3* O IF5 O A...

A:

Q: Which compound in each pair is more acidic?

A: Generally, Which compound gives H+ ions is known as acid... Acidity depends substituents attached wi...

Q: Give the major product for the following reaction

A: Friedel-Craft acylation reaction: Benzene gives an aromatic electrophilic substitution reaction.  Wh...

Q: Which of the following are not correctly paired? a. Na, alkali metal b. Sn, lanthanide c. Br, hal...

A:

Q: For the reaction below which of the statements is correct? A + 2B → 3C The rate law cannot be determ...

A:

Q: a Br e OCH3

A:

Q: Which of the following molecules can participate in any kind of hydrogen bonding with water? H. H-C=...

A:

Q: What volume (mL) is required from a stock solution of 1.98m KNO3 to prepare a 750ml solution of 1.00...

A: We can solve the problem from the following formula : V 1 S 1 = V 2 S 2    Where : V1 = initial vol...

Q: Which of the numbered responses lists all the following stresses that would shift the equilibrium to...

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Q: The isomerization of cyclopropane to form propene is a first-order reaction. H2C CH2 H3C-CH=CH2 CH2 ...

A:

Q: C. For each alkene, draw the carbocations that can be formed when these alkenes undergo electrophili...

A: Carbocation is a species in which carbon carrying positive charge.

Q: Calculate the change in entropy for a sample heated from 298 K to 500 K under constant pressure. The...

A:

Q: Ho H, Heat

A: It is elimination reaction.  Major product will take according to saytzeff rule.

Q: For the reaction C3H8 + 502→ 3CO2 + 4H20 at a particular time, A[CO2]/At = 2.5 x 10-2 M/s. What is A...

A: Since you have asked multiple question, we will solve the first question for you.If you want any spe...

Q: Which of the following statements is/are correct about visible spectrum i. white light passes throug...

A: The statements which are correct about visible spectrum are, ii) The observed color is the complime...

Q: CECH 1. НО. CI

A:

Q: On analysis, an equilibrium mixture for the reaction 2H2S(g) = 2H2(g) + S2(g) was found to contain 1...

A:

Q: (b) Explain what will happen to the activation energy and pre-exponential factor if the following ch...

A: In a chemical reaction, the conversion of reactants to products requires several criteria to be met....

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 55.85 g Fe ...

A:

Q: 2. A buffer solution is prepared by dissolving 4.7 g of nitrous acid, HNO2 , and 13.8 g of sodium ni...

A: The solution is as follows:  

Q: CH3 CH3 -CH2-C-CH2-CH3 HNO3 KMNO4 А B H2SO4 H2SO/Heat CH3

A: Organic reaction mechanisms:

Q: Question 13 Ultraviolet and visible molecular absorption spectroscopy is used primarily for quantita...

A: In UV visible  best wavelength to use is the one with the highest molar absorptivity (λmax), provide...

Q: Which of the following statement is NOT true about IR absorption process? i. A molecule absorb only ...

A: The correct option is : A molecule absorb only selected frequencies of infra-red radiation.  Reaso...

Q: An ideal gas sealed in a rigid 5.87-L cylinder, initially at pressure Pi=10.10 atm, is cooled until ...

A:

Q: Determine the pH of a 0.15 M solution of Ca(BrO2)2 at 25 oC.  At the same temperature, Ka for HBrO2 ...

A: Answer: Conjugate acid of weak base and conjugate base of weak acid gets hydrolyzed on adding in wat...

Q: 3. What is the pH of the carbonic acid if 20.00 mL of 0.0500 M H,CO3 is titrated with (a) 0.00 mL (b...

A:

Q: 8.00 mL of 5.00 x 103 M Fe(NO3)3 (5.00 times 10 to the minus 3rd power MF e (NO3)3) is added to 4.00...

A: Answer: First of all we will calculate the number of moles of ferric ion (Fe3+) added into the solut...

Q: What causes the oscilation of the  covalent bond oscillates resulting to  varying electromagnetic fi...

A: In a covalent bond, in natural states atoms in covalent bond vibrates at natural frequency which com...

Q: Which one of the following is not equivalent to one mol of the substance? O 65.39 g Zn O 14.01 g N O...

A: Given: To identify which option is not equivalent to 1 mole.  

Q: HO.

A: The synthesis of 4-acetylbenzoic acid is given below

Q: Suggest a combination of an organic halide and a cuprate reagent appropriate for the preparation of ...

A:

Q: The molar mass of Fluorine (F) is 19.0 g/mol. Calculate the molar mass of F2. O 6.31 x 10-23 g/mol O...

A: Given: The molar mass of fluorine = 19.0 g/mol

Q: A solution of manganese chloride has SG of 2.98 and contains 28.3% manganese chloride by mass. if 50...

A: Given: Mass % of Manganese chloride i.e. MnCl2 = 28.3 % Specific gravity of solution = 2.98  Volume ...

Q: What is the Amax of this given structure?

A:

Q: Calculate the degrees of unsaturation and draw structures that would meet the following descriptions...

A:   Degree of unsaturation (DOU) :  DOU indicates the total number of pi bonds and rings within a mole...

Q: (3) It takes 330 J of energy to raise the temperature of 24.6 g of benzene from 21.0°C to 28.7° C at...

A: Given: Total energy = 330 J Mass of benzene = 24.6 g Initial temperature = 21 °C Final temperature ...

Q: What changes would be made to separate the two isomeric pinene (α and β), bp 156 oC and 167 oC  resp...

A: As the boiling points of the isomers is different enough that we can separate them by fractional dis...

Q: The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide (SO2). How ma...

A: Here we have to find total number of sulfur atoms present in 15500 tons of SO2 gas . Here we have to...

Q: Discuss the structure of ethyl chloride, its nomenclature (systematic and common), it's physical pro...

A: Common name:  ethyl chloride IUPAC name: Chloroethane 

Q: How many grams of AgNO3 should be used to prepare 250 mL of 0.600M AgNO3 solution?

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.