How many moles of sodium hydroxide would have to be added to 150 mL of a 0.368 M hydrofluoric acid solution, in order to prepare a buffer with a pH of 3.160?  ____moles

Q: 4. Formic acid, HFor, has a K value of 1.8 x 10-4. You need to prepare 150 mL of a buffer hav- ing a…

A: Buffer are the solution which are made on mixing weak acid or weak base with the salt of its…

Q: A buffer is created by combining 3.55 g of NH3 with 4.78 g of HCl and diluting to a total volume of…

A: For determining the pH of a buffer, we have to use the Henderson-Hasselbalch equation –

Q: The largest change in pH for an effective buffer occurs when the base is how many times as…

A: Involved equation:- HA + H2O = H3O+ + A- As we know pH = pKa + log[Base]/[acid]

Q: What is the pH of a benzoic acid/ benzoate buffer that is made by combining 0.3275 g of a benzoic…

A: The question is based on the concept of buffer solution. we have been given a buffer made up of…

Q: How many grams of solid potassium cyanide should be added to 1.00 L of a 0.193 M hydrocyanic acid…

A: As we know that  Pka value for HCN = 9.2  Molar mass of KCN = 65 g/mol

Q: How many grams of solid ammonium chloride should be added to 2.00 L of a 0.221 M ammonia solution to…

A:

Q: How many grams of solid ammonlum chloride should be added to 0.500 L. of a 0.128M ammonia solution…

A: Given:Buffer solution of ammonium chloride and ammonia solution. Ammonia solution = 0.128M Volume of…

Q: Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H3O2 is 1.8 x…

A: option d is correct.  Explanation: Given : pH = 9.26 Ka for acetic acid = 1.8 ×10-5 Kb for NH3 =…

Q: Which of the following buffers has the largest capacity if made in 1.0 L solutions? A) 0.300 mol HCN…

A: The ability of a solution to maintain the change in its pH is known as buffer capacity.

Q: What mass of ammonium chloride should be added to 2.55 L of a 0.155 M NH3 in order to obtain a…

A: The pH of a buffer solution can be calculated by using Henderson- Hasselbalch equation.

Q: How many grams of solid ammonium chloride should be added to 2.00 L of a 0.211 M ammonia solution to…

A: For NH3 , pKb = 4.75  pOH = 14.00 - pH = 14.00 - 8.630 = 5.37 Henderson equation for basic buffer…

Q: To make a buffer with a pH of 5.00, how much sodium acetate would you have to add to a solution that…

A:

Q: How many grams of solid ammonium bromide should be added to 2.00 L of a 0.205 M ammonia solution to…

A: Given data :

Q: Select the combination that results in the most effective buffer? 0.200 M HBr; 0.200 M KBr O 1 M HF;…

A: The answer is given as follows

Q: Mixing 50.0 mL of 0.200 M Na2HPO4 with 50.0 mL of 0.120 M HCI results in a buffer solution composed…

A: 1- First we will determine the mmoles of both species.  mmoles of Na2HPO4 = [ 0.200M × 50.0mL ]…

Q: Which acid(s) could you use to make a buffer with pH = 10.20 (choose all that would work) a. NH4+…

A: Given :Different type of acid.  To find : Acids that are used to make butter with PH = 10.20…

Q: A buffer solution is prepared by dissolving 1.000 g of ammonium chloride (NH,CI) into 100.00 mL of a…

A:

Q: A 250.0-mL buffer solution is 0.250 M in acetic acid and 0.250 M in sodium acetate.a. What is the…

A: a. The Henderson-Hasselbalch equation is as follows, pH=pKa+logbaseacid The calculation of initial…

Q: What mass of sodium benzoate should be added to 150.0 mL of a 0.15 M benzoic acid solution in order…

A: The mass of sodium benzoate that should be added to 150.0 mL of a 0.15 M benzoic acid solution in…

Q: How much 5.80M NAOH must be added to 430.0 mL of a buffer that is 0.0215 M acetic acid and 0.0270M…

A:

Q: To prepare an acetate buffer, 204 g of sodium acetate was dissolved in 0.8 L of 0.6 M acetic acid.…

A: Given : Ka = 1.78 x 10-5  Mass of sodium acetate = 204g Molarity of acetic acid = 0.6M Volume = 0.8L

Q: A buffer contains 0.175 moles C2H5NH3NO3 and 0.225 moles C2H5NH2 in 800.0 mL water. Kb (C2H5NH2) =…

A: The pOH of a basic buffer solution can be expressed as: pOH = pKb  + logC2H5NH3NO3C2H5NH2pOH = pKb…

Q: If equal volumes of 0.4 M NaF and 0.5 M HCl are mixed the resultant solution will be a buffer True…

A: A buffer solution is considered to be a solution which resist any change in its pH and we need a…

Q: How many grams of solid ammonium bromide should be added to 1.50 L of a 0.106 M ammonia solution to…

A: From the relation, pOH is calculated as,

Q: A buffer is made with 1.0 mol of sodium acetate and 1.0 mol acetic acid in 1 liter of solution.…

A: A buffer is made with 1.0 mol of sodium acetate and 1.0 mol acetic acid in 1 liter of solution. The…

Q: A buffer composed of 0.1 M CH3COOH/1.0 M CH3COO- has a lower buffering capacity as opposed to a…

A: We know that, buffer capacity range from ( pKa + 1 ) to ( pKa - 1 )  Buffer capacity very less at…

Q: How many grams of solid ammonium chloride should be added to 2.00 L of a 0.172 M ammonia solution to…

A: It will form a basic buffer. And pkb for NH3 = 4.74 Molar mass of Ammonium chloride is 53.49 g/mol

Q: How many grams of solid ammonium chloride should be added to 1.00 L of a 0.107 M ammonia solution to…

A: Calculate the value of pKa by using Kb value of ammonia,

Q: How many grams of solid ammonium bromide should be added to 2.00 L of a 0.151 M ammonia solution to…

A: The pOH of the basic buffer solution is determined using the Henderson-Hasselbalch equation- pOH =…

Q: How much 6.01 M NAOH must be added to 590.0 mL of a buffer that is 0.0210 Macetic acid and 0.0230 M…

A:

Q: A 1.0-L buffer solution is 0.125 M in HNO2 and 0.145 M in NaNO2. Determine the concentrations of…

A: Given,  Volume of buffer soluton =1L          Concentration of HNO2 =0.125M         Concentration of…

Q: the reagent potassium phosphate tribasic trihydrate (K3PO4*3H2O) and 1.1M HCl and 1.1 M NaOH. you…

A: Given: The reagent potassium phosphate tribasic trihydrate (K3PO4*3H2O) and 1.1M HCl and 1.1 M NaOH.…

Q: A buffer solution was made by adding 9.35 mL of 0.50 M acetic acid and 0.628 g sodium acetate with…

A:

Q: How many grams of sodium hydroxide are needed to be added to 595 mL of 0.450 M HA solution to…

A:

Q: A beaker with 165 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total…

A:

Q: buffer is created by combining 140.0 mL of 0.30 M HCHO2 with 80.0 mL of 0.20 M NaOH. Determine the…

A: Reaction taking place between weak acid and  strong base is not completely neutralized. HCOOH    +…

Q: How many grams of solid ammonium bromide should be added to 2.00 L of a 0.268 M ammonia solution to…

A:

Q: A) 0.574 M HF and 0.312 M Naf B) 0.287 M HF and 0.156 M NaF C) 0.189 M HF and 0.103 M NaF D) 1.15 M…

A:

Q: 36.4 mL sample of a 0.110 M solution of NaCN is titrated by 0.160 M HCl. K, for prior to the start…

A: The question is based on the concept of titrations.   we are titrating  a weak base with a strong…

Q: Calculate the pH of 0.50 L of a buffer solution consisting of 0.70 M formic acid () and 0.50 M…

A:

Q: What mass of sodium benzoate should you add to 150.0 mL of a 0.15 M benzoic acid solution to obtain…

A: The mass of sodium benzoate that should be added to 150.0 mL of a 0.15 M benzoic acid solution in…

Q: Select the combination that results in the most effective buffer? O 0.800 M HNO2; 0.799 M NANO2 O…

A: Buffer solution: An aqueous solution that contains the mixture of weak acid and its conjugate base…

Q: Select the combination that results in the most effective buffer? O 1.00 M HF; 0.100 M NH3 O 1 M HF;…

A: Correct option is : iii 0.200 M HBr; 0.200 M KBr

Q: How many grams of solid ammonium chloride should be added to 2.00 L of a 0.282 M ammonia solution to…

A:

Q: Calculate the number of grams of ammonium chloride thatmust be added to 2.00 L of a 0.500 M ammonia…

A: Volume = 2.00 L Concentration of ammonia = 0.500 M pH of buffer = 9.20 Kb for ammonia = 1.80×10-5

Q: Which of the following could be added to a solution of sodium acetate to produce a buffer? A sodium…

A: In this question, we want to identify which species give buffer solution after addition of each…

Q: 51. A 250.0 mL buffer solution is 0.250 mol L in acetic acid and 0.250 mol L in sodium acetate. a.…

A:

Q: Select the combination that results in the most effective buffer? O 0.10 M HCI; 0.10 M NaCIO O 0.90…

A: Buffer solution - which resists drastic change in pH when a small amount of strong acid or base…

Q: A buffer solution that is 0.488 M in HCN and 0.488 M in NaCN has a pH of 9.40. The addition of 0.01…

A: solution- From henderson equation that pH = 14 -12pKa +log [salt[acid] [salt] = 0.398 M [acid] =…

Q: Question attached

A: The concentration of ammonia, [NH3], in the solution is; MNH3×VNH3=MHCl×VHClMNH3=20.5 mL×0.102 M25.0…

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.