Which one of the following would make the best buffer? (Ac = acetate) O a solution of ammonia and ammonium chloride, NH3 and NH4Cl O a solution of hydrochloric acid and sodium chloride, HCl and NaCl a solution of acetic acid and ammonium chloride, HAC and NH4CI O a solution of acetic acid and ammonia, NaAc and NH3

Q: QUESTION 31 A substance composed of two or more elements in a fixed, definite proportion is O A. a…

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Q: Calculate the moles of H+ delivered to each sample based on your experimental data and record these…

A: A substance's solubility product (Ksp) is the ratio of concentrations at equilibrium. Molar…

Q: How do you measure the amount of heavy metals concentration in soil?

A: Heavy metals refer to any metallic chemical element that has a relatively high density and is toxic…

Q: Transition metal chemistry: 4. Provide the products/reagents for each reaction. LOCH₂ + b. d. f.…

A: a. Suzuki Miyaura coupling. b. Heck coupling. C. Heck coupling. d. Grubbs metathesis. e. RCM. f.…

Q: A student collected 17.14 ml of H₂ over water at 25.00 °C. The water level inside the collection…

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Q: 3 12(s) + 2 MnO2(s) + 8 OH(aq) →6 (aq) + 2 MnO4 (aq) + 4H₂O(1) The equilibrium constant for the…

A: Given-> Equilibrium constant (Keq) = 1.66 × 1024

Q: Determine the equilibrium constant at 255 K for the following reaction under acidic conditions. 4H+…

A: We can calculate equilibrium constant by using equation ∆G°= -R T lnK Where  ∆G°= Gibbs free energy…

Q: 4. Which pair could be used to demonstrate the law of multiple proportions? O A. CuCl2 and CuCl O B.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Limiting Reagent Investigation Introduction: In this lab a precipitate will be formed by mixing…

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Q: What is the organic product formed in the following reaction? عدامهم Na " olevo "os Na III. IV. ů

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Q: Using Eºcell, choose all the reactions that are spontaneous. 2Fe²+ (aq) + Cl2(g) → 2Fe³+ (a +…

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Q: Which of the following is the strongest acids? A. Benzoic acid, K₂ = 6.25 x 10-5. B. Formic acid, K₂…

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

Q: For the following reaction, 5.68 grams of chlorine gas are mixed with excess phosphorus (P4) . The…

A: Given :-  phosphorus (P4) ( s ) + chlorine ( g ) → phosphorus trichloride ( l )  Mass of Cl2 = 5.68…

Q: Question 14 The hydrolysis of phosphoenolpyruvate proceeds with a AG₁° of about -62 kJ/mol. A major…

A: When phosphate group undergoes hydrolysis then the inorganic phosphate is released.  the negative…

Q: For each item, indicate if it is true for galvanic cells only, electrolytic cells only, both or…

A: Galvanic cell and electrolytic cell are two different types of cell.  Galvanic cell is a cell that…

Q: What is the definition of a solution? What is the definition of solubility? Which one of these…

A: Since you have posted multiple questions as per guidelines we can answer only one . If you want…

Q: A 10.00 L tank at 21.4 °C is filled with 14.8 g of carbon monoxide gas and 10.7 g of sulfur…

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Q: 4. From the following list, choose the correct reagents and calculate the volumes needed to make…

A: Answer: Buffer capacity would be good if we use the pKa close to the pH. Hence we should use the…

Q: 24-28. Balance the following half-reaction equations: (a) OsO4(s) → Os (s) (acidic) (HO)51 (6) (b)…

A: Balanced the given reaction under the given conditions ----

Q: How much water can you extract from 1.00 L of 0.35 M solution of sugar at 40 C by exerting a…

A: First of all we will calculate the moles. Concentration = mole ÷ volume

Q: Which of the following is necessarily true for a galvanic cell with the following reaction? NiSO4…

A: Solutions- Galvanic cell for the reaction between Nickel sulphate and iron.

Q: For a particular reaction at 236.0 °C, AG=-848.32 kJ, and A.S= 648.46 J/K. Calculate AG for this…

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Q: Chemistry A 30.0 mL sample of 0.100 M HN3 (hydrazoic acid) is titrated with 0.150 M NaOH. Calculate…

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Q: Identify the compound that can form hydrogen bonding? O A. CC14 O B. NO2 OC. CH4 O D. HF QUESTION 38…

A: 37) CCl4 doesn't form hydrogen bonding.

Q: 10.0 g of NaHCO3 is dissolved in a mixture of 1750 mL water and 250 mL of 0.20 M NaOH. a. Calculate…

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Q: Nickel metal has a density of 8.909 g/cm^3 and an atomic radius of 124.6 pm. a.) Calculate the…

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Q: At 1000K, the value of Kp for the following reaction equals 0.338. 2 SO3 (g) = 2 SO2 (g) + O2 (g) Kp…

A: To find the direction of reactions we calculate the reaction quotient and compare it with…

Q: A chemist prepares a solution of potassium dichromate (K₂Cr₂O7) by measuring out 43.6 µmol of…

A: Given :-  No.of moles of K2Cr2O7 = 43.6 umol  Volume of solution = 300. mL  To calculate :…

Q: The ideal gas law states that: PV=nRTPV=nRTPV=nRT with P being pressure, V being volume, n being…

A: In this question, we have to choose the correct option among which of the following four laws…

Q: What is the pH of a solution containing 0.30 M lactic acid (K₂ = 1.38 x 10-4) and 0.50 M of lactate…

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Q: 10.0 g of NaHCO3 is dissolved in a mixture of 1750 mL water and 250 mL of 0.20 M NaOH. a. Calculate…

A: pH of solution can be calculated using Henderson hasselbalch equation.

Q: e the concentration of NO2 after 700 seconds?

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Q: What is the [H+] of a 0.650 M solution of acetic acid? Ka (acetic acid) = 1.8 x 10-5.

A: Given : Concentration of acetic acid = 0.650 M  Ka = 1.8 x 10-5

Q: Without using thermodynamic tables, predict the signs of AHO and ASº for the following reaction.…

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Q: What is the IUPAC name for the following compound? OH Cl Select one: A.…

A: In this question we have to tell the IUPAC name of the compound.

Q: Chemistry please neat writing! 13.28 Pick an appropriate solvent(s) from table to dissolve each of…

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Q: Chemistry Gaseous methane CH4 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide…

A: Given, Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide…

Q: 3. Show that the following linear combinations used to form sp³ orbitals are mutually orthogonal. a)…

A: In sp³ hybridization, one s orbital and three p orbitals hybridize to form four sp³ orbitals, each…

Q: 7) 8) KHSO4(s) -> AgNO3(aq) + K₂SO4(s) + Na₂CrO4(aq) SO3(g) + — Ag₂CrO4(s) H₂O + NaNO3(aq)

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Q: QUESTION 13 When [H*] = 1.0x10-6 M at 25°C, then O A. pH = -2.00. O B. pH = 2.00. O C. pH = -6.00. O…

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Q: 1. Name the chemical and physical characteristics of polymers.

A: 1. Chemical characteristics of polymers; a. Reactivity and bonding: Polymers have covalent bonding…

Q: a. Draw a structure showing at least four repeat units of polyacrylonitrile {[CH₂-CH(CN)]n}…

A: The repetation of monomer can happen in mainly 3 ways, these are- head to head, head to tail and…

Q: 52) Predict the hydrolysis products for the following reactions: A) OCH₂CH3 H₂O* -CH-OCH₂CH3 + H₂O…

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Q: Calculate the value of K at 25°C for the reaction: 5Fe²+ (aq) + MnO (aq) +8H+ (aq) 4 Use the…

A: The equilibrium constant, K is related to the standard cell potential, E°cell by the following…

Q: Which of the following is necessarily true for a galvanic cell with the following reaction?…

A: We will checking the following options for suitable answer. This question is from Electrochemistry…

Q: synthesize m form of aspirin from benzene

A: synthesize  of aspirin from benzene is given below

Q: Consider the following reaction that follows a second order rate law. 2 NO2 (g) → 2 NO (g) + 02 (9)…

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Q: How many mL of K2SO3 solution are needed to get 3.13 g from a 0.359 M K2SO3 solution?   What is the…

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Q: How many grams of caffeine need to be added to 850 ml of benzene to make a 0.55 m solution? Density…

A: The molality of the solution is defined as the ratio of no of moles of solute to that of mass of…

Q: Ni (s) + 2 Ag+ (aq) → Ni2+ (aq) + 2 Ag (s) What is the equilibrium constant Keq for this reaction at…

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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.