A buffer is made using 200.0 mL of 0.100 M (CH3)3N (trimethylamine) and 100.0 mL of 0.300 M (CH3)3NHCl (trimethylammonium chloride). How many mL of 0.100 M NaOH must be added to exceed the buffering capacity of this buffer? For (CH3)3N Kb = 6.3 x 10^-5

Q: COnenta uonapa 2. Acetic acid and a salt containing its conjugate base, such as sodium acetate, form…

A: Solutions that resist a change in the pH on addition of an acid or a base is called buffer…

Q: buffer solution is prepared by dissolving 4.7 g of nitrous acid, HNO2 , and 13.8 g of sodium…

A: The solution is as follows:

Q: A 50.00-mL aliquot of 0.0700 M NaCN is titrated with 0.140 M HCI. The reaction is: CN' (aq) + H3O*…

A: The question is based on the concept of titrations.   we are titrating a strong hydrochloric acid…

Q: Solutions of sodium acetate and acetic acid are combined in equal volume to produce a buffer.…

A: Buffer capacity =2.303 a.b(a+b) Buffer capacity α a.b(a+b) here ,  a = concentration of acid form…

Q: A buffer solution was prepared by mixing 300.0 mL of a 0.200 M solution of hydoxylamine (OHNH2, Kb =…

A: Added NaOH is reacts with salt. For pH  calculation using Henderson Hasselbalch equation.

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 x 104) and 0.200 mol of NaF to…

A: The question is based on the concept of buffer. we have to calculate pH of the buffer after adding…

Q: A buffer solution containing only 0.050 mol of CH3NH2 and 0.060 mol of CH3NH= has a total volume of…

A: Given.     Methylamine = 0.050.                              CH3NH3Cl = 0.060

Q: The Kb of ammonia is 1.76x10-5. What is the pH of a buffer which is prepared by combining 50.0mL of…

A: This question can be solved on the basis of the Handerson hasselbach equation which describes the…

Q: At 25oC, a 1-L buffer solution is prepared by mixing acetic acid and sodium acetate. A) If the…

A: Use Henderson Hesselbalch's equation to get the pH of buffer solution having weak acid and its salt…

Q: What A chemistry graduate student is given 500. mL of a 1.50M trimethylamine (CH, N solution.…

A: Given: The volume of trimethylamine solution = 500 mL = 0.5 L The conc. of this solution = 1.50 M…

Q: Volume transferred, mL Solution Buffer a Buffer b 0.100 М СН,СООН 40.0 40.0 0.100 M NaOH 20.0 30.0…

A: We have to use henderson hasselbalch equation to calculate the pH of buffer. We need to calculate…

Q: A buffer solution that is 0.458 M in HCN and 0.458 M in KCN has a pH of 9.40. The addition of 0.01…

A: The buffer solution consists of a weak acid (HCN) and the salt of weak acid and strong base (KCN).…

Q: A buffer solution contains 1.250 mol of phenol, C6H5OH, and 0.950 mol of sodium phenoxide, C6H5ONa,…

A:

Q: A buffer solution contains 0.275 M of acetic acid, HC2 H 3 O 2 , and 0.350 M of its conjugate salt,…

A: Given : Concentration of HC2H3O2 = 0.275 M Concentration of KC2H3O2 = 0.350 M

Q: . What is the pH of a buffer prepared by adding 0.405 mol of the weak acid HA to 0.507 mol of NaA in…

A:

Q: What is the pH of a buffer made from 0.580 mol of CH;NH2 (Kb = 4.4 x 10-4) and 0.220 mol of CH3NH31?

A:

Q: A student wants to prepare a 400 mL of 1.00 M buffer with a pH of 3.2. Which of the following…

A: A buffer is a solution which resist change in pH and obtained when a weak acid and the salt of its…

Q: A buffer is prepared by mixing 35.2 mL of 0.183  M NaOH with 141.2  mL of 0.231 M acetic acid. What…

A: Given: Concentration of acetic acid = 0.231 M Volume of acetic acid solution = 141.2 mL = 0.1412 L…

Q: You are given 100.0 mL of the following buffer:  0.010 M HC2H3O2 and 0.010 M NaC2H3O2.  What is the…

A: Given, HC2H3O2=0.010 M ; NaC2H3O2 =0.010 MKa=1.7×10-5we are asked to calculate the effective pH…

Q: You are given a 40.0mL sample of 0.80M CH3CH2COOH is titrated with 0.30M NaOH.  What is the pH of…

A:

Q: How many grams of solid sodium cyanide should be added to 1.50 L of 0.172 M hydrocyanic acid…

A: The given data contains, Volume of HCN =1.50 LMolarity of HCN =0.172 MpH =8.570

Q: Use the Henderson-Hasselbach equation to calculate the initial pH of a sodium acetate/acetic acid…

A: Given that: molar mass of NaCH3COO.3H2O = 136 g/mol Ka = 1.8 x 10-5 volume of  acetic acid = 150 mL…

Q: Consider a buffer made by adding 42.3 g of (CH3)2NH2I to 250.0 mL of 1.42 M (CH:)2NH (Kb = 5.4 x 10…

A: (CH3)2NH is a weak base and (CH3)2NH2I is its salt with a strong acid HI. Thus, the mixture is a…

Q: Consider the titration 35.0mL of 0.250M methylamine CH NH2 and 0.200 M HNO3. K. = 5.9 x 104 a.…

A: Whenver an acid and base reacts with each other than they form salt and water and the process is…

Q: Consider a buffer made by adding 32.7 g of (CH₃)₂NH₂I to 250.0 mL of 1.42 M (CH₃)₂NH (Kb = 5.4 x…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: A buffer is made using 200.0 mL of 0.100 M (CH3)3N (trimethylamine) and 100.0 mL of 0.200 M…

A:

Q: A 26.9 mL sample of 0.375 M diethylamine, (C2H5)2NH, is titrated with 0.258 M nitric acid.The pH…

A:

Q: Consider a buffer made by adding 46.9 g of (CH₃)₂NH₂I to 250.0 mL of 1.42 M (CH₃)₂NH (Kb = 5.4 x…

A: Buffer is the solution that resists the change in pH.  This solution tries to main the minimum…

Q: The pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.305 mol of Na in 2.00 L of…

A: Given,  The pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.305 mol of NaA in…

Q: 25.0cm3 sample of a 0.1 mol/dm3 solution of ethanoic acid (ka = 1.8 x 105) was titrated with 0.1…

A: Titration is done to find the concentration of solution.

Q: You have a 258.3 mL sample of 1.659 M HA (Ka = 5.97⋅10−75.97⋅10-7).  Calculate the pH of the best…

A:

Q: What is the pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.305 mol of Na in…

A: Solution -

Q: You need to prepare 750ml of 300mM Tris-HCl pH 6.5 buffer that also contains 25 mM NaCl. How much do…

A: a. The buffer contains 300 mM of Tris-HCl

Q: What mass of sodium benzoate should you add to 150.0 mL of a 0.17 molL−1 benzoic acid solution to…

A:

Q: NaF solution added drop wise to 0.0144 M solution in Ba? What is the lowest concentration of F…

A: Hi, since you have posted multiple questions, we will answer the very first question for you. Kindly…

Q: What is the pH of a nitrous acid/nitrite buffer that consists of 0.15 M HNO2 and 0.65 M LiNO2? What…

A: First calculate the pH.  Then calculate the pH of new solution.

Q: Consider a buffer made by adding 52.3 g of (CH3),NH2I to 250.0mL of 1.42 M (CH3)¿NH (Kb = 5.4 x…

A: The concentration or Molarity of salt is calculated by - M = w×1000/m×V Here, M = Molarity of Salt,…

Q: You find 425.0 mLof 0.350 M sodium oxalate in the lab, and you want to use it to make a buffer with…

A: Volume of sodium oxalate = 425 mL or 0.425 L Molarity of sodium oxalate = 0.350 M Moles of sodium…

Q: A student was required to prepare 250.0 mL of a cyanoacetic acid/sodium cyanoacetate buffer in which…

A: Given, Volume of buffer = 250.0 mL Concentration of weak acid = 0.067 M Concentration of conjugate…

Q: Starting with 500. mL of a buffer that is initially 0.76 M in CH3CH,NH2 (K, = 5.6x10-4) and 0.80 M…

A:

Q: A student titrates 20.0 mL of 1.0 M NaOH with 2.0 M formic acid, HCOOH (K, = 1.8 x 10 4).…

A: The equivalence point is the theoretical value of the volume of acid required to titrate the base,…

Q: You are given a recipe for a buffer that contains 8% (w/v) CaCl2.2H2O, however, you only have CaCl2…

A: We know, formula mass of CaCl2 .2H2O = 147 g/mol   8%(w/v) CaCl2 .2H2O means 100 ml solution contain…

Q: if the change in pH after addition of 1.0mL of 0.10N HCI is 0.09, what is the total buffer capacity…

A: Given-> Volume of HCl = 1.0 ml Normality = 0.10 N Change in pH = 0.09  Volume of solution = 20 ml…

Q: pH of the buffer after the addition of the NaOH

A: pKa(CH3COOH) = 4.74 Moles = M × V (L)   Moles of Acetic acid =  M × V(L)     = 0.281 × 0.300   =…

Q: A buffer solution that is 0.397 M in HCN and 0.397 M in KCN has a pH of 9.40. The addition of 0.01…

A: Given that, We have a buffer solution containing 0.397 (M) HCN and 0.397 (M) KCN. The buffer…

Q: 1. A buffer is formed by mixing 65.0 mL of 0.82 M acetic acid (CH3CO2H) with 80.0 mL of 0.64 M…

A:

Q: How many grams of (CH3)2NH2CI must be added to 1.00 L of 0.200 M (CH3)2 NH to produce a buffer with…

A: Given : Concentration of (CH3)2NH = 0.200 M Volume of buffer solution = 1.00 L pH of buffer = 10.65…

Q: Calculate the pH of a 100.-mL buffer prepared with 1.30 g of imidazole (C3H¾N2) and 1.30 g of…

A: By addition of acid , base part of buffer system i.e. imidiazole unit reacts with acid to form salt…

Q: 24. How many moles of NH,Br must be added to 2 L of 0.1 M NH,OH to form a buffer whose pH is 9.00?…

A: pOH = 14 - pH = 14 - 9.00 = 5.00   Let y moles of NH4Br is added. Moles of NH4OH = M x V = 0.1 x 2 =…

Q: What is the pH of a buffer that consists of 0.412 M methylamine CH3NH2 and 0.219 M methylammonium…

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.