Calculate the [OH-] of 101.40 mL of a buffer initially consisting of 0.1271 M C5H5N and 0.0838 M C5H6NBr after addition of 0.00177 mol of HCl. Assume that no volume change occurs after addition of the acid. The Kb of C5H5N is 1.40e-9

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Q: 7) A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution...

A: Given,  [Ca(OH)2] = 0.10 M  Volume of Ca(OH)2 = 100.0 mL  [HBr] = 0.10 M  a). Determine the pH befor...

Q: which one has higher buffer capacity o.1 M C6 H8O7 , 0.01 M Na3C6 H5 O7 or 0.01M C6 H8O7, 0.01 0.01 ...

A: Buffer capacity refers to the amount of acid or base that the buffer can neutralize before the pH ch...

Q: 5. What is the activity coefficient of Ba2+?

A: Given-> Molarity of BaCl2 = 0.025 M  

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Q: Write down the d-electron count of [Fe(H2O)6]3+ and [Fe(CN)6]4-, from this guess which one will have...

A: Let us discuss its complex and splitting. 

Q: Which of the ff. is NOT true about the activity coefficient? a. It increases as the concentration of...

A: The relationship between activity coefficient γ and concentration (c) can be given as: a=γ×c        ...

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Q: a Calculate AH for the reaction 2K(s) + 2H,0(1) – 2KOH(aq) + H2 (g) Substance and State AH (kJ/mol) ...

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Q: Select the single best answer. Would [32]−, [16]−, or [22]−annulene be aromatic if each ring is pl...

A: Given, [32] - Annulene [16] - Annulene [22] - Annulene All the rings are planar   Required,         ...

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Na(s) + Cl,(9)→2 NaCl(s) ...

A: Given- 2Na+Cl2->2NaCl.              ∆H=-822KJ

Q: Given the reaction: 3H2(g) + N2(g) ⇌ 2NH3(g) Calculate the Kp if Kc is 0.105 at 472°C. Use the formu...

A:

Q: If you dissolve 5g of NaCl in 250 ml of a solvent that has a density d=2, then you prepared a ____% ...

A: Given :-  Mass of NaCl = 5 g  Volume of solvent = 250 mL  Density of solvent = 2 g/mL  To calculate ...

Q: #4. What will be the pH if 125 ml 1.0 M HCI is mixed with 100 ml of 1.0 M NAOH?

A:

Q: When ammonium sulfate dissolves, both the cation and the anion have acid-base reactions: (NH4)2SO4(s...

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Q: Which one is INCORRECT? a.Br2 : electrophilic aromatic substitution b.Neutral KMnO4 : oxidation c.Lu...

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Q: A 0.100 mole sample of CH4 reacts completely in a calorimeter having a heat capacity of 783 J/°C. Th...

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Q: What is the best choice of reagent(s) to perform the following transformation?

A: In this question stereo chemistry have not mentioned to the given product. so it should be Br2 CCl4

Q: Question 1 Which of the following is the strongest acid? a. CH3CH3 b. CH3NH2 c. CH3OH d. CH3F a O b ...

A: Ans. Option c. CH3OH

Q: An equimolar solution of ammonium sulfate, sodium chloride, and magnesium nitrate has an ionic stren...

A:

Q: 6.) Given the following information: 2 A(g) + B(g) = AB(g) 2 A(g) + C2(g) =2 AC(g) K1 = 5.0 x 104 K2...

A:

Q: B.O to Ar = 1.5. True False

A:

Q: 4. An aqueous solution of AgCl wherein u-D0.10 Ksp of AGCI Ksp' of AGCI

A: 4. Solution - According to the question - Given - the solubility of AgCl decreases because NaCl is a...

Q: You have 6.79 mL of  a 0.415 M aqueous solution of Sodium Bicarbonate (NaHCO3). You add all of this ...

A:

Q: What is the hybridization of carbon atoms labeled i – iii in the following structure? H,C=C=CH2 i ii...

A: Hybridization of the carbon (C)

Q: la) Use Woodward-Feiser rules to całculate the Amax of compound (1) and (II):

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Q: copper C iron C uminum OTHERS C

A: The metallic bond is Sodium which has a lone electron in the outermost orbital.

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Q: Differentiate a two-flask from a one-flask titration method. (in min. 5 sentences)

A: A question based on analytical process that is to be accomplished.

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A:     Balanced equation for the decomposition of KClO3                2KClO3 (s)  → 2KCl (s) + 3O2 (g)...

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Q: Give the organic reactant needed to complete each of the following Grignard reactions. Write out the...

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Q: At a certain temperature, K = 0.18 for the equilibrium PCI3(g) + Cl2(g) - PCI5(g) Suppose a reaction...

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Q: allyic 3. CI e) CICH2CH2C(CH3)3 1° alyik f) (CH3)2CCICH2CH3 3° allylic g) CICH2C(CH3)CH2CH3 h) (CH3)...

A: Primary carbon in which it ia attached to one carbon and if there is any group is present for exampl...

Q: At a certain temperature, the reaction COlg) + 2H2(g) • CH3OH(g) has K = 0.500 If a reaction mixture...

A:

Q: At 21 °C, a solution of 12 mL each of 0.00200 M Fe3+ and 0.001000 M SCN- was mixed and brought to 25...

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Q: In an atom, the charge of the dense fraction is similar to that .of alpha particles True False O Epo...

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Q: Consider the following acid-base reaction: NH3 •. HC=CH NH2 HC=C: 1 2 3 Which species predominate at...

A: The species which predominantes depends on the acidity of the two acids present in the equilibrium r...

Q: Answer with the word true or false and correct the error if any (answer five) 1- The total energy of...

A: 1) true  2) true  3) true 4) false  5) true   

Q: Provide suitable IUPAC name for each of the following compounds.

A:

Q: Calculate Kc for the reaction below at 375°C if Kp at 375°C for this reaction is 4.3x104 N2(g) + 3H2...

A: Calculate Kc for the reaction below at 375°C if Kp at 375°C for this reaction is 4.3 × 10-4.

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A: Predict the suitable mechanism for the following reactions.,  

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Q: A 1.0 L ideal gas at 15 0C and 2.00 atm contains 1.28 moles of gas. Calculate the new volume, in mil...

A: We can use ideal gas equation to calculate new volume.

Q: CH CH CHCH,. Сн, сн, СH, СH, Вr, (сн,),ССН, Сн, and сH, СH, CH, CI Br

A:

Q: QUESTION ONE a. Complete the electron configurations using s, p, d notation for the following atoms ...

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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.