4. Methanoic acid, HCOOH, has a K₂ value of 1.58 x 104 mol/L. What ratio of methanoic acid and sodium methanoate would give a buffer of pH = 4? r

Q: A certain metal with molar mass of 54.55 g/mol crystallizes to form a face- centered cubic unit cell…

A: Answer: Density of a unit cell is: d=Z×MNA×a3 Here: d=density of the unit cellM=Molar mass of the…

Q: 15.91 Classify each of the following species as a Lewis acid or a Lewis base: (a) CO₂, (b) H₂O, (c)…

A: -> Lewis acid is acid which can accepts loan pair from donar compound. -> Lewis base is base…

Q: A hypothetical element with atomic radius of 100 pm forms a cubic unit cell that has an edge length…

A: Given ,  Atomic radius of an hypothetical element  R = 100 pm  And edge length of cube is 441 pm

Q: Typewritten for an upvote. No upvote for handwritten. Please skip if you have already done this.…

A: The molarity of an unknown solution is determined by the following equation: xM1V1=yM2V2…

Q: 6. Three different sets of data of [A] versus time are given in the table below for the reaction A→…

A: #(a): We can find the order of the reaction w.r.to each of the given data sets by using the…

Q: Expanded Structure Condensed Structure Skeletal Structure NH2 CH,ČHCH,CH3 нон H-CEC-C-C-C-H

A: In the organic chemistry , we can represent the Molecules in the different structural forms such as…

Q: Calculate the concentration of OH ions in a 1.4 x 10-³ M HCl solution.

A: Given, The concentration of HCl =  1.4×10-3 M The concentration of OH- is:

Q: o How many moles of gas are present in a 25L chamber containing a pressure of 750mmHg at 25° C

A:

Q: Predict whether the entropy change of the system in each of the following is positive or negative.…

A: Given,              O2(g)→ 2 O(g)    The entropy of the system is:

Q: 7) of aqueous 15.75 Predict the pH (> 7, < 7, or solutions containing the following salts: (a) KBr,…

A: 15.75 (a) Aqueous solution of KBr is neutral (pH = 7). It doesn't give H+ or OH- upon dissolving in…

Q: 1. If 0.250 L of aqueous solution with a density of 1.00 g/ml contains 13.7 µg of pesticide, express…

A: Given: The volume of the solution = 0.250 L The density of the solution = 1.00 g/mL The mass of…

Q: Instructions: Draw a Lewis structure for: (a) H;S, (b) OF2, (c) hydroxylamine (NH;0)

A: The Lewis structure Tells about the bonding of atoms  to the central  Atom.

Q: 106. The following procedure calls for the assay of Sodium bicarbonate tablets 1) Triturate 10 pics…

A:

Q: 2. Calculate the density of an irregularly shaped solid if its mass is 50.2 g and its volume is 5.0…

A: Density is calculated by dividing the mass of a substance by its volume.  Given: The mass of the…

Q: 5. a) Calculate the pH of a buffer solution which is 0.1 mol/L with respect to HCN (K₁ = 4.9 x 10-¹0…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: 2) When a certain freon used in refrigeration was expanded adiabatically from an initial pressure of…

A:

Q: • Assuming that a 1.5g gas occupying a volume of 500ml at a pressure of 175 atm and a temperature of…

A: Mass of gas = 1.5 g  Volume of gas (V) = 500 mL = 0.5 L  Pressure of gas ( P)= 175 atm  Temperature…

Q: Classify the following quantities if extensive or intensive property: 4 a.) Temperature b.) Mass c.)…

A: Given quantities: a) Temperature b) Mass c) Weight d) Volume We have to classify these quantities as…

Q: structions: Draw a Lewis stru a) H2S, (b) OF2, (c) hydroxylar NH;0)

A: In the lewis structure,  first we select central atom which has lower electronegativity.  Then count…

Q: 1) Starting from the expression for the total differential dV in terms of T and p, show that…

A: Here we are required to find the following expression from the total differential dV  in terms of…

Q: Compressible is a classification of matter, where its molecules are existing separately from each…

A: A solid cannot be compressed much because its particles are already very closely packed and there…

Q: 15.53 Calculate the pH for each of the following solutions: (a) 0.10 M NH3, (b) 0.050 M C5H5N…

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Q: 2. For the reaction, 5Fe²+ (aq) + MnO4 (aq) + 8H* (aq) 5Fe (aq) + (aq) + Mn²* (aq) + 4H₂O it was…

A: Here we are required to find rate of difference species involved in the reaction.

Q: 6. Three different sets of data of [A] versus time are given in the table below for the reaction A→…

A: First, we have to find the order of the reaction w.r.to each of the given data sets by using the…

Q: III. Provide the name for each compound. 1. CuCN 2. FeO 3. ZnO 4. Al₂O3 5. AgCl

A: 1. CuCN - Copper (I) cyanide 2. FeO - Iron (II) oxide 3. ZnO - Zinc oxide

Q: Mark the false statement. A Lewis acid is a species (an atom, ion, or molecule) that is an…

A: According to Bronsted- Lowry acid - base theory, A Bronsted-Lowry acid is any species that is…

Q: Calculate the pH of a buffer solution which contains the weak monoprotic acid, propanoic acid…

A:

Q: 1. At equilibrium, the concentration of N₂, H₂ and NH3 gases are 0.25, 0.15 and 0.90 F respectively.…

A: Answer: Given data: [N2]=0.25F[H2]=0.15F[NH3]=0.90F

Q: 3. Hydrogen peroxide, commercially known as aqua oxinada, decomposes to water and oxygen gas. a)…

A: A decomposition reaction is carried out in the presence of energy which can be in the form of either…

Q: . Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When…

A: a.) ∆V can be calculated using the initial and final volume of graduated cylinder . b.) Density can…

Q: Make an outline of the separation of the following cations into their respective groups: a. mercury…

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Q: Problem #4 o A sealed jar whose volume is exactly 1 liter contains exactly 1 mole of air at 20 deg…

A: Given Volume = 1 Litre Temperature = 20oC = ( 273 + 20 ) K = 293 K number of Mole = 1 mol

Q: I. Complete the table of neutral ionic compounds with the formulas and names for each cation-anion…

A: While naming the ionic compound first we will give the name for cation and after anion . From the…

Q: 2. To prepare a solution of NaCl, you weigh out 2.634 (+0.002) g and dissolve it in a volumetric…

A: Given :-  Mass of NaCl = 2.634(±0.002)g  Volume of NaCl solution = 100.00(±0.08)mL  Molar mass of…

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.