How many moles of NH4Cl must be added to 2.0 L of 0.10 M NH3 to form a buffer whose pH is 9.00? (Assume that the addition of NH4Cl does not change the volume of the solution.)

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

A: Introduction:  We have to calculate number of moles of NaOH . Given : pH = 3.70  Ka= 6.8 × 10-4

Q: How many moles of sodium hydroxide would have to be added to 150 mL of a 0.368 M hydrofluoric acid…

A: When sodium hydroxide (NaOH) reacts with hydrofluoric acid (HF), the following reaction takes place:…

Q: An aqueous solution contains 0.459 M hydrofluoric acid. How many mL of 0.379 M sodium hydroxide…

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Q: A buffer solution contains 0.457 M ammonium bromide and 0.335 M ammonia. If 0.0430 moles of sodium…

A:

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

A: Write Henderson Hasselbalch equation, pH = pKa + log[base][acid] where Ka is the acid dissociation…

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: Ammonia is a weak base and form a buffer solution with NH4Cl The pH of buffer is close to 9-10.…

Q: What mass of NH4Cl must be added to 500 mL of a 0.150 M NH3 solution to make a buffer with pH =…

A: Step 1: Here, the ammonia NH3 solution is weak base and NH4Cl is its conjugate acid. The pKb value…

Q: How many moles of NH4Cl must be added to 3.0 L of aqueous 0.10 M NH3 to form a buffer whose pH is…

A: Adding ammonium chloride, NH4Cl, to an ammonia solution will effectively create a buffer solution…

Q: buffer solution contains 0.370 M hydrofluoric acid and 0.334 M potassium fluoride. If 0.0362 moles…

A: When a weak acid and its salt are present in a solution,they form a buffer solution.The pH of…

Q: An aqueous solution contains 0.464 M hypochlorous acid.How many mL of 0.364 M sodium hydroxide would…

A: The reaction as follows,

Q: An aqueous solution contains 0.348 M nitrous acid. How many mL of 0.236 M sodium hydroxide would…

A:

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

A:

Q: pH

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Q: How many moles of sodium hydroxide would have to be added to 225 mL of a 0.316 M acetic acid…

A:

Q: A buffer is prepared by adding 24.6 mL of 0.65 M NaF to 49.6 mL of 0.28 M HIF. What is the pH of the…

A: Given : Concentration of NaF = 0.65 M Volume of NaF solution = 24.6 mL = 0.0246 L…

Q: 100 mL of buffer contains 1 M HBrO and 1.2 M NaBrO. What is the final pH if 0.015 moles of NaOH are…

A: Value of pH is used to measure the acidity or basicity of the solution. At room temperature, value…

Q: How many moles of potassium hydroxide would have to be added to 150 mL of a 0.363 M hydrocyanic acid…

A: Buffer solutions are the solutions containing a mixture of weak base and its conjugate acid or a…

Q: A buffer system is prepared that is 0.020 M in NH3 and 0.030 M in NH4 What is the pH after adding…

A: IMPORTANT POINTS: It is a basic buffer of aqueous solution of ammonia (NH4OH) and NH4+ ,Needless to…

Q: Which of the following gives a buffer solution when equal volumes of the two solutions are mixed?…

A: Equimolar mixture of weak acid and its salt or weak base and its salt will form buffer solution.…

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: How many moles of NH4Cl must be added to 2.0 L of 0.10 m NH3 to form a buffer solution with a pH of…

A: Formula used :-  . pOH = pKb + log[salt]/[base] . pH + pOH = 14

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

A:

Q: 0.010M buffer solution or a 0.10 M buffer solution have a greater capacity for neutralizing the…

A: Buffering capacity of a solution depends upon the concentration of the solution. Higher is the…

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 solution contains 0.337 M ammonium bromide and 0.212 M ammonia. If 0.0250 moles of sodium…

A: Given: The concentration of NH3=0.337 M The concentration of NH4Br=0.212 M. The number of moles of…

Q: A chemistry graduate student is given 250. mL of a 1.30M dimethylamine ((CH) NH) solution.…

A: We have to calculate the mass of (CH3)2NH2Br needed.

Q: How many moles of NH4Cl must be added to 2.0 L of 0.10 M NH3 to form a buffer whose pH is 9.00?…

A: Given : Volume of solution = 2.0 L Concentration of NH3 = 0.10 M And pH of the buffer solution =…

Q: 4. How many moles of NH4C1 must be added to 2.0 L of 0.10 M NH3 to form a buffer whose pH is 9.00?…

A: We have volume as 2L, 0.1 M NH3, pH is 9, Kb as 1.8*10-5. We have to calculate the moles of ammonia…

Q: A buffer solution contains 0.462 M hypochlorous acid and 0.257 M potassium hypochlorite. If 0.0234…

A: The question is based on the concept of buffer solution.   A buffer is a solution which resist any…

Q: There are 250 ml of a Buffer solution, where the concentration is 0.225 M of acetate of sodium and…

A: Buffer solution is a mixture of weak acid and it's conjugate base or a weak base with its conjugate…

Q: An aqueous solution contains 0.413 M hydrocyanic acid. How many mL of 0.319 M potassium hydroxide…

A:

Q: An aqueous solution contains 0.313 M nitrous acid. How many mL of 0.351 M potassium hydroxide would…

A:

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

A: Given  NaOH  added to 200.0 mL of a 0.200 M solution of HF to make a buffer with a pH of 4.20 Ka for…

Q: In a titration experiment, 40.0 mL of 0.100 M HCI is titrated with 0.100 M NaOH solution. Determine…

A: Given data,Molarity of HCl=0.100MVolume of HCl=40mL=0.040LMolarity of NaOH=0.100M

Q: An aqueous solution contains 0.329 M methylamine (CH3NH2). How many mL of 0.305 M perchloric acid…

A:

Q: How many moles of sodium hydroxide would have to be added to 125 mL of a 0.376 M hydrocyanic acid…

A: Ka of HCN = 6.2 × 10-10 pka = -log(ka) = 9.2

Q: A 25.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M NaOH. What is the pH of the solution after…

A: The volume of 1000 mL is equal to 1.0 L. The number of moles of NaOH is calculated as shown below.

Q: A 50.0 mL of a 0.100 M ammonia (NH,) solution is titrated with 0.150 M HC1. What is the pH when 38.0…

A: This problem can be solved from acid-base reaction concept.

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

A: Given, Volume of HF solution = 200.0 mL Concentration of HF solution = 0.2 M moles of HF : = Volume…

Q: An aqueous solution contains 0.345 M dimethylamine ((CH3)2NH). How many mL of 0.370 M hydroiodic…

A:

Q: There are 0.250 ml of a Buffer solution, where the concentration is 0.225 M of sodium acetate and…

A: In order to find the change in pH, we have to find both the initial and final pH.  Hence change in…

Q: An aqueous solution contains 0.443 M hypochlorous acid. How many mL of 0.213 M potassium hydroxide…

A: Given,  [HClO] = 0.443 M  [KOH] = 0.213 M  Volume of the solution = 125 mL  pH of buffer = 7.530…

Q: 2.4. Consider a buffer solution that is 0.24 M NH3 and 0.20 M NH CI If 0.005 mol of NaOH is added to…

A: We would first Calculate initial pH of buffer solution. Then we need to calculate oH after adding…

Q: What mass of NaOH would be added to a one liter 0.200 M solution of acetic acid (pKa = 4.76) to…

A: Given : Volume of solution = 1 L  Concentration of acetic acid = 0.200 M And pH of solution = 4.76…

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

A: In order to estimate the buffer solution's pH, the expression of Henderson-Hassselbalch is utilized.…

Q: Would a 0.010 M buffer solution or a 0.10 M buffer solution have a greater buffering capacity for…

A: Buffering capacity refers to the amount of added base or added acid that can be neutralized by a…

Q: A new student in a research lab was asked to prepare pH 4.5 acetate buffer for their experiment.…

A: Given,  pH of the buffer solution = 4.5  A new student accidentally spills 3 ml of 0.1 M HCl acid in…

Q: A 50.0 mL sample of 0.50 M HCl is titrated with 0.50 M NaOH. What is the pH of the solution after…

A: Given, The molarity of HCl is 0.50 M The volume of HCl is 0.050 L Moles of HCl are: nHCl=MHCl×VHCl…

Q: How many moles of sodium hydroxide would have to be added to 150 mL of a 0.479 M hypochlorous acid…

A: The reaction between the sodium hydroxide and hypochlorous acid as shown below. At standard…

Q: How many grams of dry NHạ Cl need to be added to 2.00 L of a 0.100 M solution of ammonia, NHa, to…

A: In this question, we have to find out the correct answer of given problem by the help of the…

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.