You need to make a buffer that contains 8% (w/v) of dihydrate calcium chloride. How much ANHYDROUS calcium chloride is needed to make 3.5L of the buffer with the same molar concentration?
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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: grams
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A: The Henderson Hasselbalch equation is given by pH=pKa+log[salt][acid]
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A: Given: HF=0.150 MNaF=0.150 MVolume of buffer=0.350 L
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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…
A: In order to estimate the buffer solution's pH, the expression of Henderson-Hassselbalch is utilized.…
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You need to make a buffer that contains 8% (w/v) of dihydrate calcium chloride.
How much ANHYDROUS calcium chloride is needed to make 3.5L of the buffer with the same molar concentration?
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- A buffer is prepared by adding 2.50g of lithium fluoride to 125 mL of 0.648M hydrofluoric acid. You may assume there is no change in volume after the substances are mixed. 4. Write the equation by which this buffer would react to the addition of a strong base.buffer is prepared by adding 2.50g of lithium fluoride to 125 mL of 0.648M hydrofluoric acid. You may assume there is no change in volume after the substances are mixed 2. Write the equation by which this buffer would react to a strong acid.4. What is the pH of a buffer made from 0.42 M H3BO3 and 0.22 M H2BO3-, if the Ka for H3BO3 is 7.3 x 10-10 ? (use 2 decimal places for pH)
- You wish to make 10.0L of phosphate buffer with a pH of 7.4 from NaH2PO4 (molecular weight, 119.98g/mol) and Na2HPO4 (molecular weight, 141.96 g/mol). How much of each (in grams) do you need?How many grams of sodium lactate, NaC3H5O3, should be added to 1.00L of 0.150M lactic acid, HC3H5O3, to form a buffer of pH = 3.90? C = 12 H = 1 O = 16 KaHLac = 1.4x10-4Mixing 10 mL 1 M NH4Cl with 10 mL 1 M NH3 Why is this an effective buffer? Please provide the balanced chemical equations for how the buffer would neutralize hydroxide (OH-) and hydronium (H3O+). Please explain so I can understand why! Thank you so much!
- Suppose there is 1.00 L of an aqueous buffer containing 60.0 mmol of benzoic acid (p?a=4.20) and 40.0 mmol of benzoate. Calculate the pH of this buffer. What volume of 3.50 M NaOH would be required to increase the pH to 4.93?A buffer is prepared by adding 2.50g of lithium fluoride to 125 mL of 0.648M hydrofluoric acid. You may assume there is no change in volume after the substances are mixed. 1. What is the pH of this buffer? 2. Write the equation by which this buffer would react to a strong acid. 3. If 50.0 mL of 0.0750M nitric acid is added to the original buffer, what would be the pH? 4. Write the equation by which this buffer would react to the addition of a strong base. 5. You add 75.0 mL of 0.900M potassium hydroxide to this buffer. Assuming no change in volume, what would be the pH after this addition? 6. You add 450 mL of a 0.27M hydrochloric acid solution to the original buffer. What is the pH of the resulting solution?0.50L of a buffer is made from 2.5M citric acid and 0.5M sodium citrate how many moles of OH are present in 0.025L of 3.0M NaOH
- There is a 0.100 M solution of CH3CO2H and NaOH.Please explain in detail whether a buffer is formed when 30.00 mL of acetic acid and 20.00 mL of NaOH are combined?A 350.0-mL buffer solution is 0.150 M in HF and 0.150 M in NaF. What mass of NaOH can this buffer neutralize before the pH rises above 4.00? If the same volume of the buffer were 0.350 M in HF and 0.350 M in NaF, what mass of NaOH could be handled before the pH rises above 4.00?You are given a recipe for a buffer that contains 8% (w/v) CaCl2.2H2O, however, you only have CaCl2 anhydrous available to you. How much CaCl2 anhydrous do you need to make 3.5 L of the buffer with the same molar concentration as in the recipe? Show your calculations.