What is the pH

Q: A buffer that contains 0.40 M base, B, and 0.25 M of its conjugate acid, BH+, has a pH of 8.88. What…

A: The pH after 0.0020 mol of HCl is added to 0.25 L of this solution has to be given,

Q: An industrial chemist studying bleaching and sterilizing pre-pares several hypochlorite buffers.…

A: Handerson Hasselbalch equation –  Buffer solution is mixture of weak acid and its conjugate base.…

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Q: What is the pH of a buffer that contains 0.20 M CH 3COOH and 0.20 M NaCH 3COO?

A: A buffer solution is formed by the mixture of a weak acid and its conjugate base or a weak base and…

Q: consider 1.0 L of a buffer solution containing .50 M of a weak base, B and the salt of its conjugate…

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

Q: A buffer that contains 0.40 M base, B, and 0.25 M of its conjugate acid BH*, has a pH of 8.88. What…

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Q: A chemistry graduate student is given 250. mL of a 1.80 M acetic acid (HCH,CO,) solution. Acetic…

A: Acetic acid is a weak acid. Hence dissolving NaCH3CO2 i.e salt of acetic acid in the acetic acid…

Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 x 104) and 0.200 mol of NaF to…

A: The question is based on the concept of buffer. we have to calculate pH of the buffer after adding…

Q: What mass of ammonium chloride should be added to 2.55 L of a 0.145 M NH3 to obtain a buffer with a…

A: As we know, pKb=-logKb and, pOH=pKb + logSalt[Base]

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 grams of solid sodium nitrite should be added to 2.00 L of 0.117 M nitrous acid solution to…

A: Here we are required to find the mass of sodium nitrite needed to prepare buffer of pH =4.25

Q: A buffer that contains 0.17 M of a base, B and 0.28 M of its conjugate acid BH+, has a pH of 8.9.…

A: A buffer is a solution that can resist a change in pH when small amount of base or alkali is added…

Q: What is the % pH change if a student added 0.0025 mol of Ca(OH)2 to a 1.00 L buffer solution…

A: % pH change will be calculated using the formula as shown: % pH = ( Change in pH / Original pH ) ×…

Q: A buffer solution that is 0.458 M in HCN and 0.458 M in KCN has a pH of 9.40. The addition of 0.01…

A: The buffer solution consists of a weak acid (HCN) and the salt of weak acid and strong base (KCN).…

Q: A buffer solution contains 0.275 M of acetic acid, HC2 H 3 O 2 , and 0.350 M of its conjugate salt,…

A: Given : Concentration of HC2H3O2 = 0.275 M Concentration of KC2H3O2 = 0.350 M

Q: consider 1.0 L of a buffer solution containing .50 M of a weak base, B and the salt of its conjugate…

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 buffer made from 0.580 mol of CH;NH2 (Kb = 4.4 x 10-4) and 0.220 mol of CH3NH31?

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Q: Consider the following reaction:   CH_3COOH(aq)+OH^-(aq)===>CH_3COO^-(aq)+H_2O(l) How much 5.70 M…

A: Answer: volume of NaOH added is 1 mL (approx).

Q: A student wants to prepare a 400 mL of 1.00 M buffer with a pH of 3.2. Which of the following…

A: A buffer is a solution which resist change in pH and obtained when a weak acid and the salt of its…

Q: Calculate the change in pH when 0.0017 mol of HNO3 is added to 0.100 L of a buffer solution that is…

A: Answer: In this question we have to calculate the pH of the buffer solution before and after the…

Q: A buffer is made up from 0.15 M acetic acid and 0.5 M sodium acetate. What is the pH of the buffer…

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Q: 1. Compare the pH values of boiled and unboiled distilled H2O. 2. The Henderson-Hasselbalch…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Consider a buffer made by adding 132.8 g of NaC,H;O2 to 300.0 mL of 1.31 M HC,H;O2 (Ka = 6.3 x 105)…

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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: A buffer solution contains 0.11 mol of acetic acid and 0.13 mol of sodium acetate in 1.00 L What…

A: We need to find pH of given solutions

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

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Q: What is the pH of 1.00 L of the 0.100 M hydrofluoric acid/0.120 M fluoride ion buffer system from…

A: Given: Volume of buffer solution = 1.0 L Concentration of HF = 0.100 M Concentration of F- ion =…

Q: You have a 0.500L buffer with [HCIO] = 0.184 M and [NaClO] = 0.541 M. What is the pH after the…

A: Volume=0.500L  [HClO]=0.184M [NaClO]=0.541M  Moles of HCl =0.024 mol pKa = 7.54

Q: A buffer that contains 0.110 M HY and 0.220 M Y⁻ has a pH of 8.77. What is the pH after 0.0015 mol…

A: Concentration of HY = 0.110 M Concentration of Y- = 0.220 M

Q: A buffer that contains 0.40 M base, B, and 0.25 M of its con-jugate acid, BH⁺, has a pH of 8.88.…

A: Given data: Molarity of base B = 0.40 M Molarity of its conjugate acid BH+= 0.25 M pH = 8.88 Using…

Q: A buffer solution that is 0.471 M in HCN and 0.471 M in NaCN has a pH of 9.40. The addition of 0.01…

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Q: You find 425.0 mLof 0.350 M sodium oxalate in the lab, and you want to use it to make a buffer with…

A: Volume of sodium oxalate = 425 mL or 0.425 L Molarity of sodium oxalate = 0.350 M Moles of sodium…

Q: A buffer solution contains 0.50 M acetic acid (CH3COOH; Ka = 1.8 x 10–5) and 0.35 M sodium acetate,…

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Q: You dissolve 0.194 g of NaOH in 2.00L of a buffer solution that has [H2PO, ] = HPO,2| = 0.188 M.…

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Q: what is the ph of a buffer that consists of 0.86 m HBrO (ka= 2.29 x 10-9) and 0.41 M KBr

A: The pH of a buffer solution can be determined using Handerson Hasselbach equation that suggests the…

Q: What is the pH of a buffer that is 0.76 M in HF and 0.98 M in NaF? Ka = 7.1 x 10-4

A: pH = pKa + log [salt]/[acid] pKa = -logKa

Q: A 250.0-mL buffer solution initially contains 0.025 mol of HCHO2  and 0.025 mol of NaCHO2  . In…

A: A 250.0-mL buffer solution initially contains 0.025 mol of HCHO2 and 0.025 mol of NaCHO2. In order…

Q: 1. A buffer is formed by mixing 65.0 mL of 0.82 M acetic acid (CH3CO2H) with 80.0 mL of 0.64 M…

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Q: A 50.0 mL solution of 0.150 M acetic acid (CH3 COOH) is titrated with 0.150 M NaOH. What is the pH…

A: Final answer : 4.921

Q: The solubility product of zinc cyanide [Zn(CN)2, FM = 117.424] is 3 x 10–16.  What is the molar…

A: Given: Ksp of Zn(CN)2 = 3 × 10-16  And concentration of Ca(CN)2 = 0.15 M

Q: A volume of 500.0 mL of 0.180 M NaOH is added to 545 mL of 0.250 M weak acid (K, = 6.39 x 105). What…

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Q: What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 x 104) and 0.200 mol of NaF to…

A: they form a buffer solution.

Q: What is the pH of a buffer that contains 0.20 M CH 3COOH and 0.15 M NaCH 3COO?

A: Whenever the concentrations of the acid as well as its conjugate base, or the base and its…

Q: A buffer that contains 0.47 M of a base, B and 0.17 M of its conjugate acid BH+, has a pH of 9.22.…

A: pOH = pkb + log [conjugate acid / base] 14 - pH = pKb + log (0.17/0.47) 14 - 9.22 = pkb + log…

Q: What will be the pH change when 20.0 mL of 0.100 M NaOH is added to 80.0 mL of a buffer solution…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A buffer that contains 0.578 M base, B, and 0.299 M of its conjugate acid, BH*, has a pH of 9.09.…

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Q: A chemist added 0.15 mol of NaOH to a 1.00 L buffer that contained 0.50 M propanoic acid HC3H5O2)…

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Q: A buffer that contains 0.405 M base, B, and 0.296 M of its conjugate acid, BH", has a pH of 9.13.…

A: From Henderson Hasselbalch equation: pH=pKa+logconjugate baseacid Given, [B] is 0.405 M, [BH+] is…

Q: Consider a buffer made by adding 52.3 g of (CH3),NH,l to 250.0 mL of 1.42 M (CH3)2NH (Kb = 5.4 x…

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