A buffer system is made of 0.725M HX (Ka = 5.2 x 10-5) and 0.250M NaX. a) Calculate the pH of this system. b) Prove whether this system will be a buffer or not. c) What is the pH after 0.125M HCI is added?

Q: profile-image Time remaining: 00 : 09 : 27 Chemistry A group was given the responsibility of…

A: Solutions- The solubility of three different solvents are given in g/100ml solvent

Q: One of the problems that can be encountered in recrystallization is the failure of the solute to…

A: The reason for failure of the solute to crystallize during a recrystallization is needed to be…

Q: Combine these half-reactions into a balanced overall redox reaction. Zn (s) → Zn2+ (aq) + 2 e− Ag+…

A:

Q: Ba(OH), is a strong electrolyte. Determine the concentration of each of the individual ions in a…

A:

Q: t functional group.

A:

Q: 1. What is the difference between dye and pigment? 2. Why is it vital for a chromophore to be a part…

A: 2. Chromophore is that part of the dye which is responsible for its colour. This colour is made…

Q: Br + CH3O'Na* methanol 2. CI + NH3 ethanol 3. CI ethanol CH3 ONa*

A: (1) When bromobutane is treated with sodium methoxide in presence of methanol then methoxy butane is…

Q: Examine the image of a graph of fraction bound versus ligand concentration. The protein in question…

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

Q: Calculate the following for 64Zn (actual mass = 63.9291 amu): (a) binding energy in kJ/mol; (b)…

A:

Q: 6. Which of the processes will lead to a positive change in the entropy of the system? a.…

A: Answer: Entropy is the measure of system's disorderliness or randomness. In more possible states…

Q: Section 7.5 Solution Preparation 1I)What is the molarity of a solution prepared by diluting 25.0mL…

A:

Q: In each row check off the boxes that apply to the highlighted reactant. The highlighted reactant…

A: Acid is substance which release hydrogen ions and base is substance which release hydroxyl ions when…

Q: A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas…

A:

Q: . Carry out following conversion. Provide suitable reagents, reaction conditions and also…

A:

Q: (anode) Salt bridge (cathode)] Co Cu Cu2 e

A: Here we are required to complete the circuit diagram for a spontaneous electrochemical reaction

Q: Q-I: Determine the product(s) of the rxn and llustrate the mechanism. AlCl3 Q-II: Determine which…

A: We have given the product of the reaction with mechanism. Q-I:

Q: Calculate the amount of free energy required (or released) to allow electron transport in the ETC to…

A: Given half reactions: ½ O2 + 2e + 2H+ ® H2O                            E°´ = 0.815 V NAD+ + 2e +H+ ®…

Q: 7. Which of the following compounds will elute LAST in a reverse phase chromatography? A. ONF

A: In reverse phase chromatography, the stationary phase is non-polar and mobile phase is polar.

Q: What is the [H*] (M) of a weak basic solution with a concentration of 1.4 x 10-2 M and Kp is 6.4 x…

A: Given,  Base dissociation constant of weak base (say B) = Kb = 6.4 x 10-4  Concentration of B = 1.4…

Q: 1. Provide the missing starting material, reactant or product. Show appropriate stereochemistry. он…

A:

Q: What is the major product of the following reaction?

A: Benzene chloride is a poor substrate for nucleophilic substitution reactions. If a nitro group is…

Q: What ion would stronium replace in hydroxylapatite?

A: We have to tell the ion which is replaced by stronium in hydroxylapatite.

Q: Name the alcohol that will produce the most stable intermediate and the dehydration product…

A:

Q: It is suggested that the decomposition of nitrogen pentoxide dissolved in an organic solvent is a…

A: A question based on kinetics of reaction in solution that is to be accomplished.

Q: Laboratory Task Based on the video lecture on alcohol, phenol, and ether, and previous notes on…

A: Diethyl ether is an organic compound with an ether functional group: attached to ethyl groups…

Q: A group was given the responsibility of performing a recrystallization experiment in their…

A: Solution- Data given- compounds A and B. Solubility in g/100 mL solvent.

Q: The pH of a 0.55 M aqueous solution of hypobromous acid, HB1O, at 25.0 °C is 4.48. What is the…

A: The percentage of ionization of HBrO can be calculated as follows

Q: • H0 OH Isomalose Complete the structure by dragging the labels to the appropriate targets. Reset…

A: The linker oxygen will be protonated first and then from H2O , OH- will be formed . And the…

Q: 12. (Phase change) Calculate the total amount of heat absorbed (in kJ) when 3.00 mol of ice at…

A: Given data,Moles of H2O=3.00molesInitial temperature=-20oCFinal temperature=150.0oC

Q: Consider the molecular equation: Sr(NO3)2(aq) + Na2SO4(aq) → SrSO4(s) + 2NaNO3(aq) Next to each…

A:

Q: What is the concentration (in M) of hydroxide ions in a solution at 25.0 °C with a pH of 3.58? O…

A: pH is defined as negative logarithm of hydrogen ions present in the solution.

Q: 2) Predict the major product(s) for the following reactions. 1) (а) 2) H30*

A:

Q: Consider the reaction: 3A+4B -> 3C  What is the limiting reactant if 1 mole of A is allowed to…

A:

Q: List out merits and demerits of any one technique under top down and bottom up to synthesize carbon…

A:

Q: (anode) Salt bridge (cathode) Cu Co2 Cu2

A: Galvanic cell : It is a device which is used to convert chemical energy into electrical energy.…

Q: what is the name of the compound?  Identify the configuration of the double bond.

A:

Q: Stect attof the combinations of tproduce no ge ņ Explain शणाव- Sotid- Sotution wit उनपनीजक…

A: First of all, let's discuss what is the temperature change in a reaction. When there is a chemical…

Q: NaOH, H20 a) Heat (provide starting materials for Robinson annulation) NaOH, H2O b)

A: Robinson Annulation is a useful reaction for the formation of six-membered rings in polycyclic…

Q: Show full mechanisms for the following condensations, to determine the structures of the products.…

A: The mechanism is as follows:

Q: 1. Provide the missing starting material, reactant or product. Show appropriate stereochemistry. а)

A:

Q: 4000 3500 3000 2500 2000 1500 1000 500 Calculated

A: Spectra 1 corresponds to cis-4-cyclohexene-1.2-dicarboxylic acid. In the IR spectrum the…

Q: 7.→Hydrogenolysis of dº alkyl complexes is usually rapid, e.g.: CP2ZFRCI + H2 CP2ZFHCI + R-H Suggest…

A:

Q: What is the major organic product of the following reaction? CH3 AICI3 + CH3CI ČH3

A:

Q: 4. Predict the Product(s) of the following reactions H;SO4 1. LIAIH4 HO 2. Н-0

A:

Q: g. HCl + CaCO3→ CaClz + H20 + CO2 h. CO2+ KOH → K2CO3 + H20

A:

Q: Provide the full solutions to the following question. Show all work. What is the mass of oxygen in…

A: Given, Chemical formula of Strontium phosphate -  Sr3(PO4)2 mass of sample of pure strontium…

Q: Acetic acid (CH3COOH; pka 4.76) and its salt, potassium acetate (CH3COOK) are commonly used as an…

A:

Q: Where is the intermediate formation theory of catalysiis used ?

A: The catalyst lowers activation  energy of the   reaction Pathway.

Q: What is the pH of 0.390 M HCl(aq)? O 0.41 O 0.390 O 13.61 O 13.59 O 7.00

A: The pH of 0.390M HCl solution is given below

Q: Draw the major product of the substitution reaction shown below. Ignore any inorganic byproducts. CI…

A:

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.