You prepare a buffer by mixing 0.15 mol propanoic acid (pKa = 4.87) and 0.25 mol sodium propionate. You than add 0.025 mol of sodium hydroxide (NaOH) to the buffer mixture (assume there is no change in volume). What would the pH be after addition of NaOH? The answer is pH = 5.21 but I do not know how to get that answer.

Q: What are the classification of hydrocarbons? Enumerate the latest complete list of states of matter

A: Classification of Hydrocarbons:Hydrocarbons are organic compounds consisting of carbon and hydrogen…

Q: 10. Zn504.7H20 (1 g, 288 g/mol) was dissolved in 100 mL solution. (10) mL was titrated with 53 mL)…

A: ZnSO4.7H2O was titrated With EDTA

Q: Name each of the following cyclic alkanes, and indicate the formula of the compound. (a) -CH₂ (b)…

A:

Q: The Pauli Exclusion Principle tells us that no two electrons in an atom can have the same four…

A: Four types of Quantum numbers :  Principal quantum number(n): It defines the number of shells in an…

Q: Suppose the galvanic cell sketched below is powered by the following reaction: Fe(S)+2 AgNO3(aq) →…

A: A question based on electrode potential. An electrochemical cell is represented using that the…

Q: Draw the Lewis formula for chlorobenzene, a benzene derivative. Include all hydrogen atoms and lone…

A: The lewis structure is the representation of valence electrons of each and every atom of the…

Q: 14 2. Draw a complete Bohr-Rutherford diagram showing all the parts of the atom for ¹4, N.

A: Atom is in spherical shape in which protons and neutrons are present in the nucleus and electrons…

Q: Which measurement below has the fewest significant figures? 9.4200 x 105 g 6900 g 3.0900 x 10-² g…

A: Determine the number of significant figures in each:

Q: Select the more stable conformation of cis‑1,2‑di(2‑methylpropyl)cyclohexane. A B C D Select the…

A: We have find out the answer.

Q: H C-Cl CH3 + NaOCH₂ SN2

A: The given reaction is an example of bimolecular nucleophilic substitution reaction. The product…

Q: 11. What will be the product of the following synthesis? 4 A) B) C) D) 1. LAH 2 H₂0, Fr OH E) none…

A: LiAlH4 reduces carbonyl group to alcohol group. Alcohols on reaction with HBr give alkyl halide.…

Q: 20) How many a-cleavages are possible for this molecule? 'N

A: We have find out the answer

Q: Under certain conditions the rate of this reaction is zero order in hydrogen iodide with a rate…

A:

Q: What is the molality of ions in a 0.357 m solution of AlCl₃ assuming the compound dissociates…

A: Aluminium chloride dissociates into 1 mole of aluminium ion and 3 moles of chloride ions. AlCl3 →…

Q: Question 9 of 10 > © Macmillan Learning Rank the organic molecules in order of increasing acidity.…

A: pKa value: pKa value negative logarithm of the acid dissociation constant (Ka). pKa = -logKa Low pKa…

Q: Question 4 of 4 O Macmillan Learning Given six molecules, identify the molecules with polar bonds…

A: To solve this problem we have to identify the compound having polar bond .

Q: Which compound has the smallest heat of hydrogenation?   A. 5-methyl-1,4-hexadiene B.…

A: A question based on reactions of alkene. 5 different alkenes are given that are to be distinguished…

Q: 1. Calculate the energy (in kJ) required to heat 0.613 grams of water from -48.4 ℃ to -14.1 ℃. 2.…

A: Given,1. Mass of water = 0.613 g.Initial temperature= -48.4 ℃ Final temperature=-14.1 ℃.2.Mass of…

Q: Draw the Lewis structure for the most stable azide ion, Nã. Include lone pairs.

A: Azide ion : N3-

Q: Select the choice that best describes the relationship of the pair of compounds. E The compounds…

A:

Q: 7. The following observations were made during a chemical reaction involving three unknown metals.…

A:

Q: Which of the following is soluble in water? PbCl4 O PbSO3 O PbCl2 O PbSO4

A:

Q: Consider the resonance structures of formate. Y-Y H H Select the true statements about the resonance…

A: Resonance structures are formed when pi-electron cloud delocalises. Here formate ion forms two…

Q: What is the IUPAC name for the compound shown?

A:

Q: Rank the acids below in order of increasing acidity. OH (Choose one) 1- weakest acid 2 3 NH₂ (Choose…

A: As  s-character of carbon atom increases its acidic strength increases,The correct of s-character of…

Q: Oxidation & Reduction: 61. Consider the reaction Which statement is true for the reaction? Fe3+ is…

A: Oxidation : Loss of electrons with increase in the oxidation state. Reduction : Gain of electrons…

Q: Match the orbitals below with their kind and identify their shapes. Put letters in alphabetical…

A: The shape of S orbital. The boundary surface diagram for the s orbital looks like a sphere having…

Q: A chemist prepares a solution of iron (II) bromide (FeBr₂) by measuring out 8.06 mg of FeBr₂ into a…

A: To calculate the molarity of Br- anions in the solution, we need to determine the number of moles of…

Q: Molar mass of H₂O Moles of Released H₂O

A: It is based on the concept of mole  Here we are required to find the  Moles of water released when…

Q: Consider the molecule. CI Molecule D Br Label molecule D as cis or trans. does not apply cis O trans

A: If the two substituents are in the same plane then cis & if the two substituents are on opposite…

Q: Calculate the mass, in grams, of a sample that has a volume of (73.60 ± 3.20)mL and a density of…

A: Density  :  Density is the measurement of how tightly a material is packed together. It is defined…

Q: 1. A solution contains 15.37 grams of NaCl in 0.621 kg water at 25 °C. What is the vapor pressure of…

A: 1. A solution contains 15.37 grams of NaCl in 0.621 kg water at 25 °C. We have to calculate the…

Q: Consider the generic Lewis dot symbol for an element. Which element could this symbol represent? N C…

A: In the Lewis dot structure of element, the dots represent the valence electrons in the element.

Q: What is the relationship between the entropy change (ΔS) and the Gibbs free energy change (ΔG) for a…

A: The relationship between entropy change (ΔS) and Gibbs free energy change (ΔG) is a fundamental…

Q: Part C In the PhET simulation, make sure that the checkbox Stable/Unstable in the bottom right is…

A: We have find out the answer.

Q: 15. What is the product of this reaction NaH CH₂CH₂I

A: NaH abstracts an acidic proton from the reactant to yield a nucleophile which then react with alkyl…

Q: 8- Find all the symmetry elements and the point group for the following compound: CO Br CO 88

A: C2 : is principal axis because on rotation through C2 (i.e. 180°) it provides equivalent molecule.…

Q: 15.38 In research into the stereochemistry of nucleophilic reactions, the following reaction was…

A: We have find out the answer.

Q: Given the following reaction quotient: Note: This will represent the equilibrium arrow in this…

A: Concentration of pure solids and liquids are not considered while writing the rate constant/reaction…

Q: What type of reaction is the following? Br₂(g) + Nal(aq) → 2NaBr(aq) + 1₂(g) Combination…

A:

Q: 3. Complete the following reaction equations by giving the major produc intermediates and relevant…

A: We have find out the answer. Note~as per our company guidelines we are supposed to answer only first…

Q: What is the relationship between the following two compounds? Br COOH anomers CI X CI S OH…

A: It is based on the concept of isomer. Here we are required to find the relationship between the…

Q: All resonance structures for HC(O)CHCHNH2

A: In resonance structure, the position of atomic nuclei remains the same and only the position of…

Q: At -5.21 °C the concentration equilibrium constant K = 2.9 × 105 for a certain reaction. с Here are…

A: For exothermic reaction, equilibrium constant value decreases with increase of temperature For…

Q: Draw the structure of bromous acid, HBrO₂. Optimize formal charges.

A: First count the total number of valence electrons in HBrO2 as follows: valence electrons in HBrO2  =…

Q: What is wrong with the name 1-t-butyl-2-methylpropane? There are supposed to be 5 branches. O The…

A:

Q: Each pictured Lewis structure is invalid. Identify the error in each case. 01 :0- Answer Bank wrong…

A: The given Lewis structures are We have to tell why those Lewis structures are invalid.

Q: Write out the complete Bonding Scheme for the following compound. :0: 6,7 || H ; C = C 5 C 8 H =…

A: One single bond contains 1 sigma bond.One double contains one sigma bond and one pi bond.Triple bond…

Q: A certain liquid x has a normal boiling point of 94.30 °C and a boiling point elevation constant…

A:

Q: Using only a periodic table as a guide, arrange the atoms in order of decreasing electronegativity.…

A: Electronegativity :   Electronegativity is a measure of the tendency of an atom to attract a bonding…

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.