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A: Answer below this question Explanation:a) When a sulfonitric mixture reacts with a terminal alkyne,…
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Q: HO H2SO4
A: The reactant is an alcohol. It is an organic compound. The reagent is sulfuric acid . It is used to…
Q: what are the steps involved to yield the product in this reaction steps C ง CH3 NH2 (racemic)
A: The question is based on the concept of organic synthesis.We need to synthesize the product using…
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Q: .Draw Lewis Dot diagrams for the PF3 b) SiCl4 SeH2 d) Sl₂ e) SiSez
A: We have to draw the Lewis dot structure
Q: The equilibrium constant, Kc, for the following reaction is 6.30 at 723 K. 2NH3 (9) N2(g) + 3H2 (9)…
A: Given,The equilibrium equation:The equilibrium constant at 723 K = 6.30At equilibrium,moles of NH3…
Q: The pH of a 0.78M solution of benzoic acid (HCH,CO₂) is measured to be 2.15. Calculate the acid…
A: pH of the solution = 2.15 Concentration of benzoic acid (C) = 0.78 MKa of benzoic acid = ?
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Q: excess NaOH CI Propose a plausible mechanism for the following chemical transformation: O
A: is strong base abstract acidic proton.In acts as nucleophile.
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A: M1V1 = M2V2 M1 - Initial molarityV1 - Initial volumeM2 - Final molarityV2 - Final volume
Q: Part II-Drawing and Identifying Polysaccharides MODEL amylose cellulose STRUCTURE
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A:
Q: Which planet is known as the "Red Planet"? A) Mars B) Venus C) Jupiter D) Saturn Don't.
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A: The change in temperature for the ethanol is = 4.51 °CExplanation:Step 1: Calculation of moles of…
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Q: Find the oxidation of chlorine in hypochlorite ion
A: Given compound = Hypochlorite ionChemical formula= Oxidation of chlorine = ?
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A: Given ,Objective : Determine the pH of solution.
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A: To prepare a 25 mL solution of 20 mM CuSO4 from a stock solution of 0.25 M CuSO4, you need to dilute…
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A: 4. Reduce the set of characters to a linear combination of the character sets of the point group.
Q: 4. Rank the following compounds in increasing order of their pKa (lowest pKa first) HO 1 A) 1<2 <3<4…
A: pKa is a measure of acidity. The lower the pKa value, the stronger the acid.Electron donating groups…
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Q: OH
A:
Q: Name each of the acids listed in the table below. chemical formula HCIO name HI ☐ H₂SO3 ☐ HCIO 4 ☐
A: For the binary acids, the name starts with the hydro. Then write the name of the anion with the…
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- . How is the strength of an acid related to the fact that a competition for protons exists in aqueous solution between water molecules and the anion of the acid?A 250 cm3 volumetric flask contains exactly 200,0 cm3 of a 0,025 mol.dm3sulphuric acid solution. Thereafter ten (10) sodium hydroxide pellets, eachof mass 0,1 g are dropped into the flask. After the pellets have dissolvedcompletely, the flask is topped to the 250 cm3 mark with water and thecontents are thoroughly homogenised. Determine the pH of the resultingsolution.Calculate the volume in liters of 0.545 M KOH necessary to titrate 0.0113 moles of hydrochloric acid, HCl, to a phenolphthalein end-point. Report the answer with three significant figures.
- ) A truck driver carrying a load of lead nitrate (Pb(NO3)2) lost control of his semi- truck after hitting a patch of ice and crashed the truck into Blue Lake, which was right next to the highway. Despite the best efforts of the emergency workers, several of the crates containing lead nitrate were damaged, and the highly soluble compound dissolved immediately. Assuming the lake is initially at circumneutral pH (7), and that the spill resulted the in a total lead concentration of 10-3 M within the lake. Based on the following information, will PbO(s) precipitate out of Blue Lake. Assume all lead nitrate dissociates into Pb+2 and NO3-, no other sources of lead exist in the lake and that no other reactions besides the equations shown below occur. PbO(s) + 2H+ ⇌ PbO(s) + H+ ⇌ PbO(s) + H2O ⇌ PbO(s) + 2H2O ⇌ Pb2+ + H2O PbOH+ + H2O Pb(OH)2o Pb(OH)3- + H+ logKs0/ksp =14 logK1=3.4 logK2=-0.5 logK3=-12Calculate the volume in milliliters of 0.368 M KOH necessary to titrate 0.0209 moles of acetic acid (HOAc, HC2H3O2) to a phenolphthalein end-point. Report the answer with a precision of two decimal places.How to write the methodology? I have a practical of the MEASUREMENT USING PH METER, I don't know how to write the methodology. Here is the introduction: A pH meter is an electronic device mainly used for qualitative measurement, for thedetermination of acid and the basic value of a solution. Generally, it measures thehydrogen ion concentration/activity [H+] in a solution. It is denoted as:pH = - log10 [H+]In a pure water solution, the concentration of [H+] and [OH-] ions, respectively, rangefrom 1.0 x 10-1 M to 1.0 x 10-14 M. When [H+] is equal to [OH-] as when pure waterdissociates, the hydrogen ion concentration of pure water is equal to 1.0 x 10-7 M orpH = 7.00, defined as a neutral solution at 25°C, to be of temperaturedependent/endothermic dissociation.[H+] = [OH-] = 1.0 x 10-7 MWhen an ionic or polar substance is dissolved in water, it may change the relativenumbers of H+ and OH-. The higher the pH number, the lower the hydrogen ion concentration, and vice versa. Solution with an…
- C10H12NO4N is a weak base and has a Kb of 1.58x10-10. One, 0.650g, is dissolved in 235mL of distilled water. a. What is the initial concentration, in units of molarity, of the zalcitabine? b. Write an expression for Kb for zalcitabine. c. What are the equilibrium concentrations of the products and reactant? d. What is the pH, pOH, and % ionization of this weak base?Each indicator gradually changes colour over a range of about how many pH units?Magnesium carbonate is slightly soluble in water. The Ksp for MgCO3 is 3.5 x 10-8. The carbonate ion being a conjugate base may form the bicarbonate ion (HCO3-) and carbonic acid (H2CO3) in solution. Which of the following represents the correct mass balance equation at a pH of 7.5 for this system?
- Phenolphthalein is an acid–base indicator. In solutions of pH 6 8.5, it is colorless; in solutions of pH 7 8.5, it is deep red-purple. Account for thechange in color.Which acid would be the best to combine with its sodium salt to make a solutionbuffered at pH 5.25? If you had 500.0 mL of a 0.10 M solution of the acid, whatmass of the corresponding sodium salt of the conjugate base would you need tomake the buffer?Need solution urgently 125mL of an alkaline water sample containing 128 ppm carbonate and 40ppm hydroxide in terms of CaCO_(3) equivalent its titrated against 0.20NHCl using methyl orange as the indicator.What will be the titre value (in ml unit)?
