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 CH;NH, is 4.4 x 10-4) to make a buffer with a pH of 10.85?

Q: 3.28 g of sodium acetate (82 g/mol) added to 400 mL of acetic acid to produce a buffer solution that…

A: Moles of sodium acetate = mass/molar mass  = 3.28/82 = 0.04 mol Let molarity of acetic acid = M…

Q: What quantity in moles of NAOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a…

A: Initial concentration of base is equal to final concentration of salt because base must be limiting…

Q: Consider a buffer made by adding 132.8 g of NaC₇H₅O₂ to 300.0 mL of 2.31 M HC₇H₅O₂ (Ka = 6.3 x 10⁻⁵)…

A:

Q: Calculate the pH for a buffer that is 0.050 M benzoic acid and 0.150 M sodium benzoate. The Ka for…

A: The pH of buffer solution can be calculated by using Henderson Hesselbach equation - pH = pKa + log…

Q: A chemistry graduate student is given 300. mL of a 1.30M diethylamine ((C,H5), NH) solution.…

A:

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A: By Henderson Hasselbalch equation, pH of a buffer = pKa + log [salt] /[acid] Here, acid is HF and…

Q: How many grams of dry NH,Cl need to be added to 2.00 L of a 0.800 M solution of ammonia, NH3, to…

A: Given, Concentration of NH3, [NH3] = 0.8 MVolume of solution, V = 2 LpH = 8.64Base dissociation…

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 is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A: HF    +          NaOH -----> NaF + H2O  Given  0.3 mol           0.040 mol…

Q: How many grams of sodium hypochlorite, NACIO, need to be added to 227 mL of a 0.185 M solution of…

A:

Q: How many grams of sodium hydroxide are needed to be added to 534 mL of 0.450 M HA solution to…

A:

Q: What mass of Na2HPO4 must be added to 250. mL of 0.50 M H2PO4- to generate a buffer with a pH 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: How many grams of hydrofluoric acid, HF, should you add to a 1.65 L of a 2.65 M sodium fluoride…

A: Given: pH = 3.45 pKa = 7.1 x 10-4 Volume, V (NaF) = 1.65 L Molarity, M (NaF) = 2.65 M The strong…

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

A:

Q: What quantity in moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a…

A: Henderson-Hasselbach equation: pH= pKa + log [base]/[acid]. pKa = -log Ka Given, Ka of HF = 6.8…

Q: 3.28 g of sodium acetate (82 g/mol) added to 400 mL of acetic acid to produce a buffer solution that…

A:

Q: Complete the ICE table below to show the change occurring and calculate the equilibrium for the…

A: The equilibrium reaction occurring between A- and HA just after the addition of hydrogen ions is…

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A:

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: A buffer is made using 50.00 mL of 0.7000 M HA (a weak acid, Ka = 1.000 x 10-5) and 50.00 mL of…

A: GIVEN: Initial concentration of HA=0.7000 M  Initial volume of HA =50.00 mL Initial concentration of…

Q: 3.28 g of sodium acetate (82 g/mol) added to 400 mL of acetic acid to produce a buffer solution that…

A: Given 3.28 g of sodium acetate added to 400 ml of acetic acid to make buffer of pH =5 and pKa of…

Q: What would be the composition and pH of an ideal buffer prepared from lactic acid (CH3CHOHCO2H),…

A: The composition and pH of an ideal buffer prepared from lactic acid (CH3CHOHCO2H), (where the…

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 a buffer made by adding 43.1 g of (CH:):NH21 to 250.0 mL of 1.42 M (CH.):NH (Kb = 5.4 x…

A:

Q: An acetic acid buffer contains 0.6 M CH3COOH and 0.6 M CH3COONA. (CH3COOH has a K, 1.76 x 105.) What…

A: Given- Concentration of CH3COOH= 0.6M Concentration of CH3COONa= 0.6M Ka of CH3COOH=1.76 ×10 -5…

Q: A chemistry graduate student is given 250. mL of a 0.80M pyridine (C.H,N) solution. Pyridine is a…

A: Buffer problem and their detailed solution with reference to the question is given in step-2  first…

Q: 1. What is the pH of a buffer that contains 0.15 M CH,COOH and 0.10 M NACH,COO (K, = 1.8 x 10 )?

A: 1) Given, Concentration of CH3COOH solution = 0.15 M [CH3COOH] = 0.15 M Concentration of NaCH3COO…

Q: What is the pH of a buffer that contains 0.250 mol of CH3NH2 and 0.450 mole of CH3NH3CI? Kb for…

A:

Q: Determine the mass (in grams) of sodium formate that must be added to 1.00 L of 0.180 M formic acid…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A:

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A: Given-> Volume of buffer = 1.0 L Moles of HF = 0.300 mole  Moles of NaF = 0.200 mole Moles of HCl…

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A: Mole of NaOH = 0.07 Mol Mole of HF = 0.3 Mol Mol of NaF = 0.2 Mol

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A: In this question we have to tell the PH of the buffer solution after adding 0.04 mol of HCl.

Q: 4. A 300 mL buffer is prepared in which [HCO,] = 0.2M and [CO, ] 0.075M a) What is the pH of this…

A: Soln

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A:

Q: : Calculate the pH of the following acid-base buffers. 100 mL of 0.025 M formic acid and 0.015 M…

A: A buffer solution is prepared. When a strong base is added into a weak acid solution, then the…

Q: How many moles of HCl need to be added to 200.0 mL of a 0.200 M solution of NaF to make a buffer…

A:

Q: -4 What A chemistry graduate student is given 100. mL of a 1.10 M trimethylamine ((CH,) N) solution.…

A: From the buffer solution of (CH3)3N and (CH3)3NHBr: [Salt]: Salt concentration. [base]: base…

Q: A chemistry graduate student is given 500. ml. of a 1.50M diethylamine ((C,H) NH) solution.…

A: Value of pH of a solution is used to measure the acidity or alkalinity of a solution. At room…

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to…

A:

Q: A chemistry graduate student is given 450. ml of a 1.10M dimethylamine (CH:) NH) solution.…

A:

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

A: pH is a scale which is used to determine the acidity or basicity of a solution. pH = pKa + log…

Q: What is the pH of a buffer made from 0.580 mol of CH₃NH₂ (Kb = 4.4 × 10⁻⁴) and 0.230 mol of CH₃NH₃I?

A: g Given: A buffer solution is made with 0.580 mol of CH3NH2 and 0.230 mol of CH3NH3I. Kb of CH3NH2…

Q: 4. A 300 mL buffer is prepared in which [HCO,] = 0.2M and [CO,"] 0.075M a) What is the pH of this…

A: Given: Volume of solution = 300 mL = 0.300 L                                        (Since 1 L =…

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: How many grams of solid sodium fluoride should be added to 0.500 L of a 9.49x10-2 M hydrofluoric…

A:

Q: How many grams of NH4CI would have to be added to 250.0 mL of a 0.420 M NH3 solution to prepare a…

A: The minimum concentration of NH4Cl that must be present in the solution to have a pH of 10 is;…

Q: The Ka of hyperchlorous acid, HClO is 3.50 X 10-8. How many grams of NaClO (molar mass = 74.5…

A: 1- First calculate the concentration of NaClO :  Using the Henderson equation,  pH = pKa +…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.