if you were supplied with solutions of 1.0m HF and 1.0 NaF and asked to make 100 ml of buffer solution of ph=4.17 what quantities of the two solutions would you mix together?
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if you were supplied with solutions of 1.0m HF and 1.0 NaF and asked to make...
A buffer solution contains 1.0 M HF and 1.0 M NaF. The ka for HF is 7.2x10-5. 0.10 moles of HCl are added to 1 liter of the buffer. The pH of the resulting solution is a) 4.05 b) 4.14 c) 4.23 d) 4.74
A 360.0 −mL buffer solution is 0.150 M in HF and 0.150 M in NaF. a) What mass of NaOH can this buffer neutralize before the pH rises above 4.00? = 1.6 b)If the same volume of the buffer were 0.370 M in HF and 0.370 M in NaF, what mass of NaOH could be handled before the pH rises above 4.00?
We have 100 mL of a buffer that is made to be 0.1M HF and 0.075M NaF. What is the pH of the buffer? What is the pH of the buffer after 0.0015 moles of HNO3 has been added? What if the pH of the buffer if I add 0.0015 moles of NaOH instead of acid? What would the concentration of the HNO3 (from the previous question) if the 0.015 mole acid were contained in 1.0 mL of HNO3 solution?
Consider 1.0 L of a solution which is 0.80 M HF and 0.55 M NaF (K for HF - 7.2x104). Part 1 Calculate the pH of this solution. pH- Part 2 Calculate the pH after 0.10 mol of HCl has been added to the original buffer solution. Assume no volume change on addition of HCI. pH- Part 3 Calculate the pH after 0.20 mol of NaOH has been added to the original buffer solution. Assume no volume change on addition...
A buffer solution is 0.429 M in HF and 0.341 M in NaF if K, for HF is 7.2x104, what is the pH of this buffer solution? Submit Answer Retry Entire Group 8 more group attempts remaining A buffer solution is 0.475 M in H2S and 0.388 Min KHS. IFK for H2S is 1.0 x 10", what is the pH of this buffer solution? PH Submit Answer Retry Entire Group 8 more group attempts remaining
A 1.0-liter solution contains 0.25 M HF and 0.32 M NaF (Ka for HF is 7.2 × 10–4). What is the pH of this solution
Estimating pH 1. If you combine 40.0 mL of a 0.80 M HF solution with 60.0 mL of a 0.60 M NaF solution, which of the following is correct? HF pKa = 3.17. a) pH will be > 3.17 b) pH will be < 3.17 c) pH will equal 3.17 2. If 1.50 mL of 1.0 M HNO3 is added to a solution containing 40.0 mL of 0.80 M HF and 60.0 mL of 0.60 M NaF, what will happen...
21. How can you make the meniscus more observable if you are having difficulty reading your buret? 22. 1.0 mL of 1.0 M HCl is added to 100 mL of a sample of pure water? 1.0 mL of 1.0M HCI is also added to 100 mL of a sample of a buffer solution. Which sample will have the greater change in pH? Explain.
4. If you want to make a buffer of 4.5 pH, how many grams of NaF do you need to add to 300 mL of 0.4 M HF solution? (Ka=7.1x10-4) Answer: 114.66 grams Pka -log (7.1 X10-4) = 3.1487411651 234
Suppose you start with a solution of 1M NaF and are trying to make a buffered solution. Which of the following would you be able to add to the solution to make a buffer? will make a buffer or will not make a buffer: BaCl2 will make a buffer or will not make a buffer: HCl will make a buffer or will not make a buffer: NaOH will make a buffer or will not make a buffer: HI will make...