The pka of a dihydrogen phosphate/hydrogen phosphate buffer is 7.2 Using the Henderson-hasselbach equation calculate the volume of the conjugate base and acid required to make a solution of pH 6.03, when the total solution concentration is 0.1 mol/L. The total volume of the solution is 9mL.

Q: 3. How many molecules of ethylene diamine will react with Ni(H,O),*? Explain your answer.

A: Ethylene diamine is bidentate ligand..

Q: HCN is a weak acid (Ka=6.20×10−10) , so the salt, KCN , acts as a weak base. What is the pH of a sol...

A: Weak acid are those acid which does not dissociate completely in aqueous solution and weak base are ...

Q: 1. The structures of six organic compounds are shown below. H =H H2N (b) (c) `NH2 H2N ОН (d) (e) (f)...

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Q: What is the concentration (molarity) of OH- in a solution that is 0.0859 M NaOHat 25°C.

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Q: Describe how the catalytic mechanism of serine protease enzyme work, for amide hydrolysis

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Q: Use the References to access important values if needed for this question. Draw a structural formula...

A: When acid react with base , base can abstract most acidic hydrogen and form H2O .  

Q: What is the cobalt(II) ion concentration in a solution prepared by mixing 353 ml of 0.440 M cobalt(I...

A: Answer: This question is based on the concept of limiting reagent. Limiting reagent is the reactant ...

Q: A voltaic cell is constructed using an Al metal electrode in a 1.00 M Al3+ solution, and the other h...

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Q: The pH of a solution containing 0.40 M CH,COOH and 0.20 M CH.COONa is For the acid, Ka =1.8X10 Answe...

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are...

Q: 2. Consider the five esters below with formula C 6H 12 O 2: (a) (d) (e) (i) Whic h is/are made from ...

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Q: How many molecules of ethylene diamine will react with Ni(H,0),**? Explain your answer.

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Q: Once you've obtained the ammonia, you could use it to manufacture nitrous oxide (otherwise known as ...

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Q: When the following skeletal equation is balanced under acidic conditions, what are the coefficients ...

A: Oxidation half reaction : SO3^2- = SO4^2-  Or, SO3^2- + H2O = SO4^2- (O atom balance)  Or, SO3^2- + ...

Q: Which statement correctly describes an endothermic chemical reaction? A. The products have higher p...

A: First we would define Endothermic reaction then choose the correct option . 

Q: Consider the proposed mechanism shown below for the reaction between nitrogen dioxide and carbon mon...

A: Given : We have to predict the intermediates present in the reaction.

Q: Vhat is the pOH of a 0.0250 M HI solution? А. 0.944 В. 12.398 С. 1.602

A: Given : Molarity of HI = 0.0250M

Q: about 232°C. The combustion reaction is: S (s) (s) (g) 2. What happens to the concentration of sulfu...

A: When a particular reaction goes on , then reactants are transformed into products with time accordin...

Q: Consider the five esters below with formula C 6H 12 O 2:

A:   Esterification :  Carboxylic acid when it is treated with alcohol gives ester , it is called ester...

Q: When 22.0 mL of a 3.68x10-4 M silver fluoride solution is combined with 25.0 mL of a (yes or no) 2.4...

A: Given: Concenration of AgF = 3.68 × 10-4 M Volume of AgF solution = 22.0 mL. Concentration of NH4Br ...

Q: my clamp, Volumetric flask, buret 23. The end point in a titration of a 50.00-mL sample of aqueous H...

A: Given :-  HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)  Volume of HCl solution = 50.00 mL  Volume of NaOH ...

Q: How does the solubility of gas change when the solvent is getting colder? (think carbon dioxide in ...

A: We need to predict solubility of gas at low temperature

Q: Which of the following has the greatest molar entropy? All have the same O F2 () O F2 (s) O F2 (s)

A: Entropy: Entropy can be defined as the measurement of randomness or disorderness in the thermodynami...

Q: The acid dissociation constant K, of hypobromous acid (HB1O) is 2.3 x 10. Calculate the pH of a 1.8 ...

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Q: An oral antibiotic is available as a powder for reconstitution. At the time of dispensing, the regis...

A: Given: %(w/v) of the drug solution = 0.5% Volume of the drug solution = 120 mL Volume of water added...

Q: Number of Molecule valence electrons Formal Charge Electron-Group Geometry Molecular Geometry Resona...

A: The table can be filled using the Lewis structures of the given molecules 

Q: A gas has a pressure of 645 Torr at 128 °C. What is the temperature in Celsius if the pressure incre...

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Q: Give the systematic name of the compound below.

A: We have to predict the name of given compound.  

Q: A factory has a solid copper sphere that ne s to be drawn into a wire. The mass of the copper s, nee...

A: According to the mass conservation law when the copper sphere is converted into copper wire the mass...

Q: The compound below is treated with chlorine in the presence of light. H3C CH3 H3C CH2CH3 Draw the st...

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Q: The compound below is treated with N-bromosuccinimide (NBS) in the presence of light. Draw both reso...

A: NBS in presence of light give allylic bromination .  

Q: Consider Chemical Reaction 10.1: Mg(s) + 2HCI(aq) → MgCl2(aq) + H2(g) Chemical Reaction 10.1 For thi...

A: When a gas is collected over water , some water vapors are also present along with the gas. The tota...

Q: Choose the reactions below, that should would be classified as precipitation reactions to determine ...

A: Choose the reactions below, that should would be classified as precipitation reactions to determine ...

Q: Consider the reaction at 298 K. 2C(graphite) + O,g) 2C0(g) AH-221.0 k/mol Calculate the quantities f...

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Q: Current Attempt in Progress Show the direction of bond polarity for the following bonds by identifyi...

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Q: It takes 30.5 kJ of energy to raise the temperature of 300 g of a substance from 30.0°C to 80.0°C. W...

A: given :-  q = 30.5 kJ  m = 300 g   T1 = 30.0°C  T2 = 80.0°C  To calculate :-  specific heat capacity...

Q: The sublimation pressure of solid CO2 is 133 Pa at -134.3°C and 2660 Pa at -114.4°C. Calculate the e...

A: Given-> P1= 133 pa T1= -134.3°C = - 134.3 + 273 = 138.7 K P2 = 2660 pa T2 = -114.4°C = -114.4 + 2...

Q: sample gas has a pressure of 756 mmHg in a 125 mL flask. The sample gas is transferred to a new cont...

A: P1 = 756 mmHg V1 = 125 ml P2 = 642 mmHg

Q: A solution contains 1.21x10-2 M potassium iodide and 8.27x10-3 M sodium bromide. Solid silver nitrat...

A: Given: Concentration of KI = 0.0121 M And concentration of NaBr = 0.00827 M  

Q: How many moles of NaCl are preser in a solution with a molarity of 8.59 M and a volume of 125 mL? O ...

A:  Question 1- Molarity =8.59M  Volume =1 2 5 ml=0.125L Question 2- Volume=500mL=0.500L Molarity=0.5M ...

Q: 4. Suppose 5 mL of 1.5 M ethylene diamine is added to 50 mL of 0.15 M Ni solution in an identical ca...

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Q: What is the kinetic energy of 45-Kg object moving at the speed of 7.0 m/s ? 1150 J 1400 J 1100 J 130...

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Q: When you prepare a buffer, it is recommended to use a weak acid whose pKa is close to the pH require...

A: Here we have to explain why to make a buffer solution the weak acid chosen should have pKa close to ...

Q: Consider an 50.0 mL analyte solution containing 0.50 g of KHP, titrated against 0.10 M sodium hydrox...

A: Answer: This question is based on acid-base titration where acid is the analyte and base is the titr...

Q: 3. How many molecules of ethylene diamine will react with Ni(H,O),*? Explain your answer.

A: Ethylene diamine is a bidentate ligand...

Q: AS=- 2550 J/mole.K, at what erature range would this on be spontaneous?

A: Given  , □H = 150 kJ/mol □S = -2550 J/K For Spontaneousreaction,  □G <0    □G = □H - T □S (□H - T...

Q: The thiourea in a 1.563 g sample of an organic material was extracted into a dilute H2SO4 solution a...

A: Given,  Mass of thiourea = 1.563 g  Molarity of Hg2+ = 0.009284 M  Volume of Hg2+ = 36.43 mL  Given ...

Q: pH - 8.80 Express your answer using two significant figures. Enter your answers numerically separate...

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Q: Acetic acid was dissolved in water to a concentration of 0.10 mol.L'. The pKa of acetic acid is 4.8....

A: pKa= 4.8 -log Ka = 4.8 Ka = 1.58 x 10-5  

Q: Which of the following activities makes accurate use of stoichiometry to plan for 1 s’more per

A: Ans : option B  

Q: When the following equation is balanced properly under acidic conditions, what are the coefficients ...

A: Given unbalanced reaction is :  MnO2 + H2SO3 -------> Mn2+ + SO42-  Find the coefficient of the s...

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.