What quantity in moles of CH3NH3CI need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb for CH3NH₂ is 4.4 x 10-4) to make a buffer with a pH of 10.85?

Q: What is the pH of the buffer solution that contains 1.6 g of NH4Cl in 250 mL of 0.060 M NH3? Is the…

A: pH of a basic buffer can be calculated using Henderson-Hasselbach equation: pH=14-(pKb+logB+BOH)

Q: What is the [H3O+] and the pH of a benzoic acid-benzoate buffer that consists of 0.12 M C6H₂COOH and…

A: Recall the data from the question, Molarity of C6H5COOH=0.12 M Molarity of C6H5COONa=0.43 M Ka of…

Q: What is the pH of a solution of 0.400 M CH₃NH₂ containing 0.140 M CH₃NH₃I? (Kb of CH₃NH₂ is 4.4 ×…

A:

Q: A chemistry graduate student is given 300. mL of a 1.10M dimethylamine ((CH3)2NH) solution.…

A:

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: What mass (in g) of sodium formate, HCOONA, must be added to 10.0 L of a 0.483 Maqueous solution of…

A:

Q: What quantity in moles of CH3NH3CI need to be added to 200.0 mL of a 0.500 M solution of CH3NH₂ (Kb…

A: To calculate the number of moles of salt needed to prepare a buffer of given pH

Q: A chemistry graduate student is given 300. mL of a 1.70M trimethylamine ((CH3), N) solution.…

A:

Q: а A chemistry graduate student is given 450. mL of a 0.90M chloroacetic acid (HCH2CICO₂) solution.…

A: The image contains a detailed chemistry problem with the following information:A chemistry graduate…

Q: What is the pH of the buffer 0.13 M Na₂HPO4/0.16 M KH₂PO4? Round your answer to 2 decimal places.…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: What ratio of NaCN to HCN is needed to prepare a pH 10.10 buffer? (Ka of HCN is 4.9 × 10¯1º)

A: The given data contains, pH = 10. Ka=4.9×10-10

Q: If you have 50.0 mL of a 0.125 M acetic acid, HC,H,O, what mass of sodium acetate, NaC,H,O,, should…

A: Given: pH of the solution= 5.25 Volume ov the solution= 50 mL=0.05 L pKa of acetic acid = 4.76…

Q: Calculate the mass of C5H5NHCI (molar mass = 113.56 g/mol) that must be added to 0.80 L of 2.5 M…

A: Given, Kb of C5H5N( weak base)  is 1.8 X 10-9Therefore, pKb = - log(Kb)                            =…

Q: What ratio of NaCN to HCN is needed to prepare a pH 9.90 buffer? (Ka of HCN is 4.9 × 10-10)

A:

Q: 6. How many grams of KOH must be added to 500.0 mL of 2.0 M CH3COOH to prepare a 30 [1] sri…

A:

Q: A chemistry graduate student is given 450. mL of a 1.80M methylamine (CH3NH2) solution. Methylamine…

A: Step 1:Solution of weak base methylamine (CH3NH2) and its conjugate base (CH3NH3Br) is a buffer.…

Q: What is the pH of a buffer prepared by mixing 20.0 g of ethylamine CH3CH2NH2, and 20.0 g of…

A:

Q: What quantity in moles of CH3NH;CI need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb…

A: Given  Kb for CH3NH2   =  4.4 × 10-4  Volume of CH3NH2 solution  =  200 mL Molarity of CH3NH2…

Q: A chemistry graduate student is given 100. mL of a 1.80M trimethylamine ((CH3),N) solution.…

A: Data given: Volume of triethylamine ((CH3)3N) solution = 100 mL = 0.1 L (1 L = 1000 mL)…

Q: A benzoic acid-sodium benzoate buffer is prepared by dissolving a certain amount of sodium benzoate,…

A: A buffer solution is an aqueous solution. It consist of a mixture of a weak acid and its conjugate…

Q: A buffer solution contains 0.236 M C6H5 NH3 Br and 0.470 M C6 H5NH2 (aniline). Determine the pH…

A: The objective of the question is to determine the pH change.The value of  for aniline is .The  is…

Q: In the titration of 60.0 mL of 1.0 M methylamine, CH3NH₂ (Kb = 4.4 x 10-4), with 0.50 M HCI,…

A: Note: Since you have posted a question with multiple sub parts, we will provide the solution only to…

Q: Suppose you want to make a buffer with a pH of 6.90. Which of the following acid/conjugate base…

A: The pKa value can be used to predict the pH of the buffer solution and hence the suitable conjugate…

Q: What mass of NH4Cl must be added to 0.750 L of a 0.100-M solution of NH3 to give a buffer solution…

A: Interpretation -  To determine the mass of NH4Cl when it must be added to 0.750 L of a 0.100-M…

Q: What mass (in g) of sodium formate, HCOONa, must be added to 10.0 L of a 0.483 M aqueous solution of…

A: Here, we have to find the mass of sodium formate that must be added to 10.0 L of a 0.483 M aqueous…

Q: Consider the following reaction: CH3 COOH + OH- -----> CH3COO- + H2O How much 5.90M  NaOH must be…

A: CH3 COOH + OH- -----> CH3COO- + H2O

Q: What is the pH of a buffer solution with 0.21 M Pyridine (C5 H5 N) and 0.35 M pyridine chloride ( C5…

A: • Given that the concentration of pyridine base is 0.21 M in buffer solution. • And the…

Q: A chemistry graduate student is given 250. mL of a 1.80M pyridine (C,H,N) solution. Pyridine is a…

A: Given: volume of pyridine=250.0 mLMolarity of pyridine=1.80 MKs of pyridine=1.7×10-9pH=4.89

Q: 12 a C Consider a buffer made by adding 132.8 g of NaC,H₂O₂ to 300.0 mL of 1.51 M HC₂H₂O₂ (Ka = 6.3…

A: A buffer is a solution which resists any change in pH on adding a small amount of acid or base.  It…

Q: 6. A buffer solution contains 0.1OM benzoic acid (C,H5COOH, Ka = 6.3 x 10) and 0.10M potassium…

A: pH can be calculated by using henderson equation  pH = pka + log (salt/ acid) Pka = - log 6.3 x10-5…

Q: How many grams of dry NH4 Cl need to be added to 2.10 L of a 0.100 M solution of ammonia, NH3, to…

A: Given: Volume of ammonia solution  = 2.10 L Molarity of ammonia solution = 0.100 M pH of buffer…

Q: A chemistry graduate student is given 125. mL of a 0.30M pyridine (CHN) solution. Pyridine is a weak…

A: The concentration of pyridine = 0.30 MThe Kb for pyridine = Mass of  = ?

Q: Be sure to answer all parts. A buffer consists of 0.17 M KHCO3 and 0.65 M K2CO3. Carbonic acid is a…

A:

Q: What volume in mL of 0.2572 M NaOH must be added to 500.0 mL of 0.1000 M chlorous acid (HClO2, Ka =…

A: Given: pH = 2.25 Concentration of HClO2 = 0.100 M Volume of HClO2 = 500.00 mL Concentration of NaOH…

Q: How many moles of CH,NH,CI need to be added to 200.0 mL of a 0.500 M solution of CH,NH, (Kb for…

A: pH is the negative logarithm of H+ concentration to the base 10 represented by: pH = -logH+ For a…

Q: What quantity in moles of CH3NH3Cl need to be added to 200.0 mL of a 0.500 M solution of CH3NH2 (Kb…

A: Given -> Volume of CH3NH2 = 200 ml = 0.200 L (1L = 1000ml)  Molarity= 0.500 M  Kb = 4.4 × 10-4 pH…

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.