A 20.0 mL sample of 1.00 M NaOH was pipetted into a 500.0 mL of the evil buffer containing 0.20 M Dalek acid (HDal) and 0.30 M potassium Dalekate (KDal) What is the pH after the addition of the NaOH? Ka(Hdal) = 1.8x10-5 the answer is 5.07
Q: The following reaction is at equilibrium: PCI5(8)→ PC13(g) + Cl2(g) The equilibrium concentrations…
A: The balanced chemical equilibrium reaction is PCl5(g) → PCl3(g) + Cl2(g), Also…
Q: Of the molecules below, only __________ is nonpolar. a.BrCl3 b.IF3 c.PBr3 d.BF3
A:
Q: A standard galvanic cell is constructed with Cr3+ | Cr2+ and Mg2+ | Mg half cell compartments…
A:
Q: 25 Balance the following redox reaction which occurs in basic solution. +604-2 3+
A:
Q: Complete the following reactions by supplying the necessary reagents. Type the THREE LETTER CODE…
A:
Q: The free energy change for the following reaction at 25 °C, when [Cu2+] = 2.57x10-³ M and [I₂] =…
A:
Q: Mechanism of acid-catalyzed hemiacetal formation. 유 H3C-H О H-OCH3 methanol, an alcohol CH₂OH H2O…
A: -> Strongest acid is acid which can donate hydrogen ion easily. -> Aldehyde has electrophilic…
Q: (a-b) (c-d) (e-f) Predict the major organic products. H₂SO4 heat Br₂, FeBr3 SOCI₂ OH OH 1. NaH 2.…
A: Since the posted question contains multiple sub-parts, we are supposed to answer first three…
Q: (i) Pure RSOP86 powder has a melting point of 130 °C and a degradation temperature of 340 °C. With…
A: TGA thermograms is an analytical technique which is used to measure the weight loss of substances…
Q: Write the structure(s) for the organic product(s) of the carbohydrate reaction below. ball & stick…
A: Given Methyl α-D-glucopyranoside is having acetal group. Sugars with acetal groups are non-reducing…
Q: Propose a synthesis for the molecule. -CH3 N=C- NHCH₂CH3
A:
Q: Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) results for the…
A:
Q: Provide a synthesis for the following reaction. If more than one step is required be sure to number…
A: In this question, we have to provide synthesis reaction for conversion of Bromobutane to…
Q: Show the product from each step in the sequence of reactions from ethyl acetoacetic ester. il Br…
A: CH3CH2OK is a strong base which removes a proton from Alpha carbon of ethyl acetoacetic ester to…
Q: Arrange the following from lowest to highest entropy: AgCl(s), AgBr(s), AgI(s), Ag(s). Assume 1 mole…
A: Entropy is defined as a measure of randomness or disorder of a system. The entropy of a substance…
Q: (c) Explain how ab initio method is different from semiempirical method.
A: Computational chemistry uses result of theoretical chemistry incorporated into efficient computer…
Q: Which of the following will not have any effect on the solubility of a given solvent? capacity of…
A: Which of the following will not have any effect on the solubility of a given solvent?
Q: What must be the normality of a solution of silver nitrate so that each milliliter shall be…
A: In the given question we have to find the normality of silver nitrate and the normality is given by…
Q: 5. Identify all functional groups in the structure of fusidic acid (circle each group and name it…
A:
Q: 1. The Eº values for several reactions are given below. Which reaction is expected to have the…
A:
Q: How many milliliters of Sodium Chloride 23.4% would you add to Sterile Water to make 10 ml of 7%…
A: Concentration of solution (C1) = 23.4% Concentration of solution (C2) = 7% Volume (V1) = to find…
Q: Complete the following reactions by supplying the necessary reagents. Type the THREE LETTER CODE…
A: We know that the particular set of reagents and reaction conditions when allowed it react with…
Q: a) ethane with 1₂ b) cyclohexane with Cl₂ c) methylcyclohexane with Cl₂ d) methylcyclohexane with…
A:
Q: Nitrogen monoxide (NO), alongside water vapor, can be formed from the reaction between ammonia and…
A:
Q: Click on the glycosidic linkage НО CH2OH О ОН ОН CH2OH ОН ОН ОН
A: Glycosidic linkage — Glycosidic linkage is linkage between two sugar molecules.
Q: Select to Draw 1. NaNHa 2. CHCH₂Br Please select a drawing or reagent from the question area
A: Kindly repost your question seperately with clear image.
Q: 15. Which of the carboxylic acid pairs is the most acidic? COOH - doa? P COOH B E F CF3CH₂COOH…
A: The order of acidity of carboxylic acid can be predicted by the stability of the formed carboxlate…
Q: rmine how the following changes affect the given equilblirium reaction that is held in a closed…
A: Since you have posted multiple questions I will answer the first question for you. For the rest to…
Q: Identify the correct statement(s) concerning enthalpy. Select all that apply. Check all that apply.…
A: Enthalpy is a measure of energy in a thermodynamic system.
Q: State the Franck Condon Principle and, with the aid of diagrams, explain how electronic transitions…
A: In spectroscopy and quantum chemistry, the Franck-Condon principle is a rule that describes how…
Q: Use the standard reduction potentials given below to predict if a reaction will occur when Zn metal…
A: 1.Oxidation occure ar anode. Oxidation is tendency to lose electron. 2. Reduction is tendency…
Q: A. Write the major product(s), if any, of each of the following reactions (please draw molecular…
A: The major products of the given halogenation reaction can be drawn.
Q: Consider the following half-reactions: Half-reaction Cl₂(g) + 2e Cu2+ (aq) + 2e™ Cr3+ (aq) + 3e E°…
A:
Q: The student added universal indicator to the alkali solution at the start of the experiment. The…
A: The Concept used here is from the ACID and BASE of chemistry. According to question. When a student…
Q: 29. Assuming a Michael addition was used to prepare the following product, choose the starting…
A:
Q: Which of the following reactions will produce pentane. (Choose all correct answers) B. D. E. U U A B…
A: Given,
Q: H2X2O3 is a weak acid. What is [X2O32–] in a 0.44 M H2X2O3 solution? A. 1.1 x 10–7 M B. 0.60…
A: Given: H2X2O3 is a weak acid. Ka1 = 1.1 x 10–7 Ka2 = 7.1 x 10–11 We have to find the [X2O32–] in a…
Q: (u) Is the following sugar digestible by mammals? Explain. CH2OH OH OH CH₂OH H ОН OH ОН ОН H OH ОН…
A:
Q: For the reaction N₂(g) +202(g) → 2NO₂ (g) AGO = 104 kJ and AS° = -121.6 J/K at 308 K and 1 atm. This…
A:
Q: 35. Predict the major product from the following intramolecular Aldol addition and its dehydration…
A:
Q: Please find the two closest Lz states to this angular momentum eigenstate lö> = 5 (² (3 cos² 0 - 1)…
A:
Q: What product(s) would be obtained from the Diels-Alder reaction of trans CH3CH=CHCO2Et with EACH of…
A: The Diels-Alder reaction is an organic reaction between a substituted alkene and a conjugated…
Q: 1. NaNH2 2. Br
A: Given reaction: We have to find the products of the reaction.
Q: 12. A typical car/truck battery is a cell made by transferring 2 e- by a reaction between lead and…
A:
Q: h molecule are there two distinct sets of sulfur- bond lengths? (B) SOF₂ (C) SF (D) SF
A:
Q: For the following reactions, indicate whether the entropy of the system increases, decreases, or…
A:
Q: Which of the given reaction schemes would produce the molecule shown below? O || ||| II and III I…
A: •These reaction are addition reaction of alkene. •Here we can see that reaction I and III are…
Q: Calculate the enthalpy of combustion of C3H6: C3H6(g) + 9292 O2(g) ➜ 3 CO2(g) + 3 H2O(l)…
A: Combustion is a reaction which occur in presence of oxygen to give carbon dioxide gas.
Q: The Br-82 nucleus has a half-life of 1.0 x 103 min. If you wanted 1.0g of Br-82 and the delivery…
A: Given the half-life of Br-82, t1/2 = 1.0*103 min Disintegration constant, λ = 0.693t1/2 =…
Q: 2+ The free energy change for the following reaction at 25 °C, when Cu²+ = 1.12 M and [ca²+] =…
A:
Give a clear handwritten answer....give the detailed answer .....I want explanation
Step by step
Solved in 4 steps with 4 images
- A 1.0-LL buffer solution initially contains 0.30 molmol of NH3NH3 (Kb=1.76×10−5)(Kb=1.76×10−5) and 0.30 molmol of NH4ClNH4Cl. What mass of the correct reagent should you add? Express your answer using two significant figures.How will you prepare 500 ml of 0.750 M citrate buffer with a pH of 4.25 from solid citric acid (C6H8O7) and solid sodium citrate (Na3C6H5O7)? The Ka of citric acid is 7.40 x 10-4A sodium hydroxide (NaOH) solution was standardized with KHP primary standard. The concentration was found to be 0.1022 M. What is the concentration of a 25.0-ml hydrochloric acid (HCl) solution if it required 32.6 ml of NaOH to reach the phenolphthalein end point?
- A solution made by mixing 105.00 mL of 1.050 M CH3COOH with 35.00 mL of 0.750 M NaOH. For CH3COOH, Ka = 1.8×10-5. find the pH.common-ion effect: What is the pH change of a 0.300 M solution of benzoic acid (pKa=4.19p) if 0.135 M benzoate is added with no change in volume?You make a 200mM potassium phosphate buffer (pKa of 7.20) with monobasic potassium phosphate (molecular weight 136.09 g/mol) and dibasic potassium phosphate (174.20 g/mol). For 100mL of buffer, at a pH of 7.20, how many grams of monobasic potassium phosphate are needed? Please walk through this step-by-step.
- 1: Calculate the pH of a 2.00 M Na2CO3 given that the pKa’s of the first and second dissociation of H2CO3 (aq) acid are 6.37 and 10.32, respectively. Then 100mL of the solution is titrated with 4.00 M HCl, calculate the pH at the first equivalence point. Finally, Calculate the pH at the second equivalence point.2) A solution of NaOH was standardized by titration of a known quantity of the primary standard potassium hydrogen phthalate (KHP, FM 204.221 g/mol). Titration of 0.824 g of potassium hydrogen phthalate required 38.314 mL of NaOH to reach the endpoint detected by phenolphthalein. Find the concentration of NaOH in molarity (M).The experimental Ksp of calcium hydroxide is _________ x 10-6 if 23.09mL of the sat. calcium hydroxide solution was titrated with 12.53mL of 0.049M HCl(aq), considering 4 as an exact value for the calculation?
- A mixture of NaOH (M.wt = 40) and Na2CO3 (M.wt = 106) is titrated with 0.3 M HCl, requiring 30 mL for phenolphthalein end point and an additional 15 mL to reach the modified methyl orange end point, How many milligrams of NaOH and Na2CO3 are in the mixture *A 20.0-mL sample of a 0.125 M diprotic acid (H2A) solution is titrated with 0.1019 M KOH. The acid ionization constants for the acid are Ka1 = 5.2 * 10 - 5 and Ka2 = 3.4 * 10 - 10. At what added volume of base does each equivalence point occur?Consider the titrimetric determination of acetic acid (60.05 g/mol) in vinegar. Titration of a 5.00 mL vinegar sample requires 16.15 mL of 0.250 M NaOH to reach the phenolphthalein endpoint. Which is TRUE when the endpoint is over-run? Choose from the following choices below: