**Buffer Preparation Problem****Objective:** Determine the mass of solid sodium cyanide required to prepare a buffer solution.**Scenario:** Calculate the amount in grams of solid sodium cyanide that needs to be added to 0.500 L of a 0.289 M hydrocyanic acid solution to create a buffer with a pH of 10.200. **Given Data:**- Volume of hydrocyanic acid solution: 0.500 L- Molarity of hydrocyanic acid solution: 0.289 M- Desired pH of buffer: 10.200- Acid dissociation constant for hydrocyanic acid (Kₐ): 4.00 × 10⁻¹⁰**Instructions:**1. Use the references provided to access any necessary values for calculations.2. Calculate the required grams of sodium cyanide.3. Input the result in the designated field.4. Click "Submit Answer" to complete the task.**Note:** This problem is part of a group attempt and is auto-saved periodically for progress tracking.

Answered: Image /qna-images/answer/00b127fc-cba8-49e1-9180-e8293bf03599.jpg

How many grams of solid sodium cyanide should be added to 0.500 L of 0.289 M hydrocyanic acid solution to prepare a buffer with a pH of 10.200? (K₂ for hydrocyanic acid = 4.00×10-10) g sodium cyanide

How many grams of solid sodium cyanide should be added to 0.500 L of 0.289 M hydrocyanic acid solution to prepare a buffer with a pH of 10.200? (K₂ for hydrocyanic acid = 4.00×10-10) g sodium cyanide

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Calculate the mass of sodium acetate that must be added to 2.4 L of a 0.150 M acetic acid solution…

A: Since acetic acid is monoprotic acid Hence the pH of monoprotic acid buffer is given by…

Q: A chemistry graduate student is given 300mL of a 1.10M acetic acid solution. Acetic acid is a weak…

A: From given data Concentration of acetic acid = 1.10 M Ka=1.8×10-5 pH of buffer = 5.14 Volume of…

Q: Which weak acid should be used to create a buffer at pH= 3.52 Chloroacetic Acid, CClH2O2H, Ka =…

A: Buffer is made by mixing a weak acid and its conjugate base (or) a weak base and its conjugate acid.…

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)…

Q: How many grams of solid ammonium bromide should be added to 2.00 L of a 5.44×10-2 M ammonia solution…

A: pH is the negative logarithm of hydrogen ions. pH values vary from 0 to 14. O is very acidic while…

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: Find the pH of a buffer that consists of 0.50 M methylamine (CH3NH2) and 0.60 M CH3NH3Cl (pKb 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…

Q: 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What…

A: Answer:- This question is answered by using the simple concept of calculation of pH of buffer…

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 calculate the pH value of solution by the help of "Henderson -…

Q: How many grams of solid potassium acetate should be added to 2.00 L of a 7.25×10-2 M acetic acid…

A: The explanation is given below-

Q: How many grams of solid potassium fluoride should be added to 1.00 L of a 0.140 M hydrofluoric acid…

A: Given -Volume= 1.00L Concentration of hydrofluoric acid= 0.140 M pH= 4.097 Ka(HF)=7.20×10-4Mass of…

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: 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: Moles of HF initially = 0.300 mol Moles of NaF initially = 0.200 mol Ka for HF= 6.8 × 10⁻⁴ Moles…

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: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: How many grams of solid ammonium chloride should be added to 0.500 L of a 5.30×10-2 M ammonia…

A: This problem can be solved by using Handersen-Hasselbalch equation for weak base.

Q: 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What…

A: Answer: Buffer solution is a type of solution that resists the change in its pH on adding small…

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: 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: A buffer is a mixture of a weak acid and its conjugate base. Buffer solution will resist any…

Q: What mass in grams of potassium fluoride is needed to make 150.0 mL of a 0.450 M hydrofluoric…

A: Buffer solutions:- Buffer solutions are a mixture of acid and its conjugate base or base and its…

Q: How many grams of solid sodium fluoride should be added to 2.00 L of a 0.175 M hydrofluoric acid…

A: Given - Volume= 2.00L Concentration of hydrofluoric= 0.175M pH=2.271 Ka(HF)=7.20×10-4 Mass=?

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…

Q: A buffer is prepared by dissolving 0.80 mol of sodium dihydrogenphosphate, NaH2PO4, and 0.60 mol of…

A: Moles of sodium dihydrogenphosphate, NaH2PO4 = 0.80 mol Moles of sodium hydrogenphosphate, Na2HPO4…

Q: You are asked to prepare 2.0 L of a HCN/NaCN buffer that has a pH of 9.8 and an osmotic pressure of…

A: Osmotic pressure can be calculated as:

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: What mass in grams of potassium fluoride is needed to make 150.0 mL of a 0.450 M hydrofluoric…

A: Buffer solutions: When a tiny amount of acid or base is added to a solution, buffer solutions resist…

Q: 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 which 0.130…

A: pH is used to determine the concentration of hydronium ion.

Q: A buffer is prepared by mixing 47.2 mL of 0.209 M NaOH with 135.0 mL of 0.231 M acetic acid. What is…

Q: How many grams of solid ammonium chloride should be added to 1.00 L of a 0.243 M ammonia solution to…

Q: What mass in grams of potassium fluoride is needed to make 150.0 mL of a 0.450 M hydrofluoric…

A: Given the pH of the buffer = 4.25 Given the total molarity of HF/KF buffer, C = 0.450 M Total…

Q: A buffer is prepared by mixing 206 mL of 0.452 M HCl and 0.500 L of 0.400 M sodium acetate,…

A: Given: Molarity of HCl = 0.452 M Volume of HCl = 206 mL Molarity of sodium acetate = 0.400 M Volume…

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 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: How many grams of solid sodium fluoride should be added to 0.500 L of a 0.185 M hydrofluoric acid…

Q: You prepare a buffer by mixing 0.15 mol propanoic acid (pKa = 4.87) and 0.25 mol sodium propionate.…

A: Mole of propanoic acid = 0.15 molMole of sodium propionate = 0.25 molpKa = 4.87 Mole of NaOH = 0.025…

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

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

Q: How many g of sodium nitrate (NaNO2, 100% ionized in water) do you need to add to 4.00L of 0.500M…

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 solution = 1.0 L Moles of HF = 0.300 mol Moles of NaF = 0.200 mol Moles of…

Q: What is the pH (answer in 2 decimals) of a solution containing 0.050 M sodium formate (NaCOOH) and…

Concept explainers

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.

Question

**Buffer Preparation Problem**

**Objective:** Determine the mass of solid sodium cyanide required to prepare a buffer solution.

**Scenario:**
Calculate the amount in grams of solid sodium cyanide that needs to be added to 0.500 L of a 0.289 M hydrocyanic acid solution to create a buffer with a pH of 10.200.

**Given Data:**
- Volume of hydrocyanic acid solution: 0.500 L
- Molarity of hydrocyanic acid solution: 0.289 M
- Desired pH of buffer: 10.200
- Acid dissociation constant for hydrocyanic acid (Kₐ): 4.00 × 10⁻¹⁰

**Instructions:**
1. Use the references provided to access any necessary values for calculations.
2. Calculate the required grams of sodium cyanide.
3. Input the result in the designated field.
4. Click "Submit Answer" to complete the task.

**Note:** This problem is part of a group attempt and is auto-saved periodically for progress tracking.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

What quantity in moles of HCl need to be added to 200.0 mL of a 0.200 M solution of NaF to make a buffer with a pH of 2.80? (Ka for HF is 6.8 × 10⁻⁴)
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 which 0.060 mol of NaOH were added?
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 which 0.140 mol of HCl were added?
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 which 0.070 mol of NaOH were added?
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 which 0.040 mol of HCl were added?
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 which 0.160 mol of HCl were added?
How many mL of 1.0 M NaOH must be added to 100. mL of 0.050 M HC2H3O2 to make a buffer with a pH = 5.00? Ka = 1.8 x 10-5 for acetic acid.
How many grams of solid ammonium chloride should be added to 0.500 L of a 0.190 M ammonia solution to prepare a buffer with a pH of 9.850? Mass= g
2. What is the pH of a buffer prepared by mixing 5.0 g of ammonia (NH3) and 20.0 g of ammonium chloride (NH4CI) in enough water to form 2.50L of solution. The Kb of ammonia is 1.76 x 10-5.
How many grams of solid potassium cyanide should be added to 1.50 L of a 0.217 M hydrocyanic acid solution to prepare a buffer with a pH of 8.702 ? grams potassium cyanide = g.
How many grams of solid potassium fluoride should be added to 1.00 L of a 0.181 M hydrofluoric acid solution to prepare a buffer with a pH of 3.789?grams potassium fluoride = g
What quantity in moles of HCl need to be added to 200.0 mL of a 0.200 M solution of NaF to make a buffer with a pH of 3.60? (Ka for HF is 6.8 × 10-4)