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 0.100 mol of HCI addod?

Q: A student needs to prepare a buffer made from HF and KF with pH 3.428. If Ka for HF is 7.20 × 10-4,…

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Q: An unknown weak acid (HX) has a Ka = 4.5 x 10-11. At what pH range would a mixture of the weak acid…

A: We have to find pH range

Q: The pH of a bicarbonate-carbonic acid buffer is 6.62. What is the ratio of carbonic acid to the…

A: Ka value is 4.2x10-7 The  pKa can be calculated as follows: pKa=-log[Ka]=-log[4.2×10-7]=6.37

Q: Calculate the pH of a buffer that is 0.10 M HF and 0.080 M NaF. The Ka for HF is 3.5 x 10-4.

A: pKa of the buffer solution has to be determined for calculating the pH of the solution.

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 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: To make a buffer from a mixture of HF and NaF that has a pH = 3.35 what must the ratio of (F^-/HF)…

A: a buffer of a weak acid and its conjugate base, HF and NaF. given, pH = 3.35 Ka = 7.2 x 10-4

Q: What is the [NaNO3] in mole/liter of a solution made by mixing 2.00 grams of solid sodium nitrate…

A: 1) Given : Mass of NaNO3 used = 2.00 g And volume of solution prepared = 50.0 mL = 0.050 L…

Q: Consider a 1.0 L buffer containing 0.11 mol L-1 HF and 0.11 mol L-1 F-. What is the pH of the…

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Q: Calculate the [OH-] of 101.40 mL of a buffer initially consisting of 0.1271 M C5H5N and 0.0838 M…

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Q: Calculate the mass of the sodium acetate that must be added to to 1.50 L of a 0.450 M acetic acid…

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Q: A buffer solution contains 0.950 mol of HF and 0.150 mol of NaF in 1.00 L of solution.  What is the…

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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: A buffer solution contains 0.350 mol of HF and 1.050 mol of NaF in 1.00 L of solution.  What is the…

A: Given, number of moles of weak acid, HF = 0.350 mol  Moles of salt, NaF = 1.050 mol  Volume = 1.00 L…

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: Calculate the pH of a buffer solution that is 0.500 M HOAc (Ka = 1.8 x 10^-5) & 0.500 M NaOAc a)…

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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…

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Q: What concentration of HF do you need to add to a 0.35 M NaF solution to get a buffer solution pH of…

A: Using the Henderson Hasselbach equation: pH=pKa + log[conjugate base][weak acid] Dissociation of…

Q: A buffer contains 0.010 mol of lactic acid (pka = 3.86) and 0.010 mol sodium lactate per liter.…

A: pKa of lactic acid = 3.86Concentration of lactic acid (HC3H5O3) = 0.010 mol/LConcentration of sodium…

Q: Given 100.0 mL of a buffer that is 0.50 M in HOCl and 0.60 M in NaOCl, what is the pH after 10.0 mL…

A: Given, molar concentration of weak acid, HOCl = 0.50 M Volume of buffer = 100.0 mL = 0.100 L Molar…

Q: A buffer solution contains 0.350 mol of HF and 0.450mol of NaF in 1.00 L of solution. What is the pH…

A: The buffer solution contains HF which is a weak acid and NaF salt of its conjugate base,F- ion. When…

Q: A buffer is made by mixed 0.2 M HAc and 0.1 M of NaAc the pH of the solution has been adjusted to…

A: The given question involves the calculation of the amount of NaOH needed to adjust the pH of a…

Q: The K₂ for the acid HX is 2.714. 10-5. How many moles of Nax need to be mixed with 2.586 L of 0.152…

A: We will first determine the moles of acid. we  know pKa= -logka,we will make use of equation-

Q: There is a 0.100 M solution of CH3CO2H and NaOH. Please explain in detail whether a buffer is formed…

A: Buffer solution Buffer solution is an aqueous solution containing a weak acid and conjugate base of…

Q: A student needs to prepare a buffer made from HF and NaF with pH 3.484. If Ka for HF is 7.20 × 10-4…

A:

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: Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the…

A: Salt of strong acid and strong base are neutral  Salt of strong acid and weak base is acedic and…

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: A buffer solution is made that is 0.348 M in HCN and 0.348 M in NaCN . (1) If Ka for HCN is…

A: Given:  The Ka for HCN = 4.00 × 10-10 We have to calculate the pH of a solution that is made of…

Q: How many millilitres of a 0.1 M solution of NaF and of 0.1 M solution of HF must be mixed to obtain…

A: Acidic buffer :-  A mixture of weak acid and its salt with strong base is known as acidic buffer For…

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 quantity in moles of HCI need to be added to 200.0 mL of a 0.200 M solution of NaF to make a…

A: moles of HCl added to prepare the buffer solution

Q: what is the pH of a buffer solution that contains 0.100M HF and 0.120 M NaF? The Ka of HF is…

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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 × 10⁻⁴) and 0.200 mol of NaF to…

A:

Q: A buffer solution contains 0.450 mol of HF and 0.950 mol of NaF in 1.00 L of solution.  What is the…

A: pH  calculation of an an acidic buffer after adding a 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: 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: 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…

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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.