What is the pH (answer in 2 decimals) of a solution containing 0.050 M sodium formate (NaCOOH) and 0.15 M formic acid (HCOOH). The Ka of formic acid is 1.77*10-4.   You are asked to prepare a buffer with a pH = 3.00. Starting with 0.250 L of 0.750 M HF, how much of sodium fluoride (in g) is needed? The Ka of HF is 7.20*10-4 and the MW of sodium fluoride is 41.99 g/mol.

Q: Which of these has the largest mass? an Avogadro's number of potassium atoms one mole of bromine…

A: -> 1 mol atom = 6.022 × 1023 atoms.-> atomic mass is mass of 1 mol atoms.

Q: What sequence of reactions can be used to accomplish the following synthesis? OH CH₂

A: RMgX, RLi, NaBH4, LiAlH4  give direct or 1,2-addition to alpha, beta-unsaturated Carbonyl compounds.…

Q: Three 25.00 mL samples of acidified Cr₂O72 were titrated with 0.100 M Fe2+ producing Cr³+ and Fe³+.…

A: The samples used are:25 mL Acidified Cr2O72-0.100 M Fe2+The products are Fe3+ and Cr3+.

Q: Freon-12 (CF₂Cl2₂) is commonly used as the refrigerant in central home air conditioners. The system…

A:

Q: A solution of 222.6 g of ethylene glycol, C₂H4(OH)2 in 200g of water has a density of 1.072 g/ml.…

A: To determine the molarity of the solution, we need to calculate the number of moles of solute…

Q: A gas occupying a volume of 644.0 mL at a pressure of 0.806 atm is allowed to expand at constant…

A: To solve this problem we have to use the Boyle's law .According to Boyle's law P1V1 = P2V2 Where, P1…

Q: Explain why boron (B) has a higher ionization energy than fluorine (F).

A: Ionization energy represents the amount of energy needed to remove an electron from the outermost…

Q: What is the product of the reaction shown? 1. Li 2. Cul 3. CH3CH₂Br Br IV .Li V Br A) I B) II C) III…

A: Corey House synthesis is an organic reaction where an alkyl halide react with lithium in dry ether…

Q: The ?a value for acetic acid, CH3COOH(aq), is 1.8×10−5. Calculate the pH of a 2.40 M acetic acid…

A:

Q: Arrange the solutions in order of increasing acidity. Rank solutions from least acidity to greatest…

A:

Q: Uranium hexafluoride is a solid at room temperature, but it boils at 56°C. Determine the density of…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Calculate the volume, in L, of water that must be added to dilute 15.6 mL of 10.4 MHCI to 0.0900…

A:

Q: Identify the molecular ion and the base peak in this mass spectrum (Circle or label them). The…

A: Given, Mass spectrum of organic compound. Based on mass-to-charge ratio (m/Z)  values we can…

Q: QUESTION 19 The following rotary compound in optical analysis (chirality)? 00 0 HO Н Yes O No о COOH…

A: THIS STRUCTURE IS AN EXAMPLE OF ALKYLIDENES. THIS IS FORM WHEN ONE OF THE C=C GROUP OF ALLENE IS…

Q: If 47.9 L of N2 at 29.7°C and 723 torr is heated to 111 °C and compressed to 3.77 L, what is the new…

A:

Q: What mass of Fe(OH)3 will be obtained when 100. mL of 0.150 M FeCl3 is mixed with 200. mL of 0.176 M…

A:

Q: Let the rate of the reaction 4 PH3 + 3 0₂-4P+6 H₂O be expressed as -A[PH3]/At. Which of the…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The following information is given for water, H₂O, at 1atm: boiling point = 100 °C specific heat…

A:

Q: Freon-12 (CF₂ Cl2) is commonly used as the refrigerant in central home air conditioners. The system…

A: Pressure of gas have several units like mmHg, pascal, atm etc.Here we need to convert the pressure…

Q: Below are the ¹H NMR spectrum of toluene, acetyl chloride, and 4-methylacetopheone. Identify the…

A: Every nuclei will have spin and if an external magnetic field is applied, there will be an energy…

Q: Give synthesis of longifolene by e.j corey

A: Longifolene  is sequiterpene It is natural  product

Q: 8) Rank the following structures in order of increasing Bronsted acidity. F 9=0 OH least acidic B F…

A:

Q: CIO4* (use black sphere for CI) PH3 (use black sphere for P) H₂O (use black sphere for O)

A: The given problem is based on the concept involving Lewis theory and VSEPR theory to predict…

Q: The nonvolatile, nonelectrolyte estrogen (estradiol), C18H2402 (272.40 g/mol), is soluble in benzene…

A: Mass of estrogen = 12.5 gramsVolume of benzene solution = 172 mLMolecular weight of estrogen =…

Q: The magnetic property of a transition metal complex can be predicted using crystal field theory. If…

A:

Q: c) CH, CH₂ CH__CH__CH_с_CH, он сн, CH, e) C-CH2-CH2-CH, CH, CH₂ CH,`CH-CH, CH–CH,-CH-C—CH, CH3 ҫн,…

A: When there are multiples of a certain kind, use numerical prefixes like di-, tri-, tetra-, etc. to…

Q: esc Write a balanced chemical equation for the standard formation reaction of gaseous ammonia (NH₂).…

A:

Q: A mixture of gases contains 0.290 mol CH4, 0.260 mol C₂H, and 0.280 mol CHg. The total pressure is…

A:

Q: 3C. Consider the fictitious electrophilic aromatic substitution reaction below. Digitally illustrate…

A: Electrophilic aromatic substitution reactions are the reactions where an electrophile replaces one…

Q: where ) are the spinors of s, i.e. |+) = and |-) = angle. The spin of electron 2 is in a spin state…

A: State of electron is one of the eigen state of = =         = = eigen values Eigen value

Q: A solution containing a mixture of metal cations was treated as outlined. 1. Dilute HCI was added…

A: What can be said about the presence of each of these groups of cations in the original solution?

Q: Draw the product of the reaction shown below. Ignore inorgani byproducts. HCI, ZnCl2 H₂O OH Q

A: It is the test which is done often to differentiate between primary, secondary and tertiary…

Q: Two substances are sitting on a lab bench in separate containers, at room temperature. Substance A…

A: Substance A, a non-reactive, colorless gas, could potentially belong to the noble gases group or…

Q: Sodium (Na) is a shiny silver-coloured metal at room temperature. Zinc is also a shiny…

A: Metals are the substance that have tendency to lose valence electrons. These are usually lustrous…

Q: What mass of Na2CrO4 is required to precipitate all of the silver ions from 65.0 mL of a 0.800 M…

A:

Q: Draw the metal coordination structure of carbonic anhydrase enzyme. Clearly show the 3-D geometry…

A: The metal coordination structure of carbonic anhydrase enzyme is as

Q: COMPOUND LEWIS DOT STRUCTURE HCN (use black sphere for C) SO3 (use black sphere for S) NO₂™ (use…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts…

Q: The number 39.00671 rounded to 3 significant figures is: The number 801.0013 rounded to 5…

A: The question is based on rounding of the given numbers using significant figures

Q: Which statement best describes the first step in the mechanism of the following ether synthesis? Na…

A: -vely charged alkoxide is electron rich hence acts as a nucleophile . Here I- of alkyl halide is a…

Q: vis dot structure of methanol (CH3OH) is given below. Estimate the enthalpy of combustion of ethanol…

A: Enthalpy of the combustion of methanol is to be calculated.

Q: An ideal gas is contained in a cylinder with a volume of 5.1*10^2 mL at a temperature of 30.°C and a…

A: An ideal gas has negligible volume in compare to volume of the container, and the molecules of ideal…

Q: Draw the curved arrows to represent the electron flow in the reactants. C X

A:

Q: When plutonium-241 is bombarded with another nucleus, five neutrons and new isotope with an atomic…

A: In the process of radioactive decay, unstable nuclei emit particles such as alpha particles,…

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: Alcohols react with hydrogen halides to form alkyl halides through a Carbocation intermediate.

Q: 1B. Write the mechanism for the Friedel Crafts Acylation reaction of ethyl benzene using acetyl…

A: The Friedel-Crafts acylation is a reaction which occurs in the presence of lewis acid AlCl3 The…

Q: B) 1-chloro-6-methylbenz C) 1-chloro-2-methylbenzene D) 1-chloro-2-methycyclohexane H₂C- CH3 A)…

A: By using IUPAC rules, we can give names of the organic compounds.

Q: An ideal recrystallization solvent a) Dissolves the solid when hot and insoluble when cold b)…

A: An Ideal recrystallization solvent-a. Dissolve the solid when hot and insoluble when cold.…

Q: 14. Certain compounds are known to “dimerize” in solution – this means that the intermolecular…

A: The depression in freezing point is given by  ΔTf = i * Kf * molality where ΔTf = depression in…

Q: What is the concentration (in M) of the hydroxide ions in a saturated solution of magnesium…

A: Solubility product constant (Ksp) of Mg(OH)2=1.8 × 10-11The balanced equation for the dissociation…

Q: What is the correct structural formulas for 5-ethylhept-4-enal?

A: The molecular formula for 5-ethylhept-4-enal is C9H16O. The ball-stick model would be as shown

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.