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Question 3 (1 point) What is the pH of a 0.200 M solution of NaF? HF...
9 5 points What is the pH of a buffer solution containing 0.50 M NaF and 0.10 M HF? Ka = 6.9 x 10-4 for HF? O 11.92 3.86 2.08 10.14 5.57 Previous Next
Calculate the pH of a 3.51×10-3 M solution of NaF, given that the Ka of HF = 6.80 x 10-4 at 25°C.
Calculate the pH of a 3.27×10-3 M solution of NaF, given that the Ka of HF = 6.80 x 10-4 at 25°C.
What is the pH of a buffer solution containing 0.13 M HF and 5.0×10−2 M NaF? What is the pH of a buffer solution containing 1.0×10−2 M HF and 0.16 M NaF? Using the table given below for Ka values, compare the pH of an HF buffer that contains 0.13 MHF and 5.0x10-2 M NaF with another HF buffer that contains 1.0x10-2 MHF and 0.16 M NaF. Ka and K b values for selected weak acids and bases HF Acid...
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 with a pH of 3.60? (Ka for HF is 6.8 x 10-4)
What is the pH of 44.3 ml of a solution which is 0.26 M in NaF and 0.33 M in HF? For HF use Ka=6.8x10^-4
5) A 1 L buffer solution is 0.520 M in HF and 0.520 M in NaF. Calculate the pH of the solution after adding 0.220 moles of NaOH. Assume no volume change upon the addition of a base. Ka for HF is 3.5 X 10-4
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
2) What is the pH of a solution containing 0.446M NaF and 0.345M HF? (Ka for HF = 6.7 x 10“). [17 pts] 4) 10.0 mL of 0.500 M HNO, are added to 250. mL of 0.100 M CHO,H and 0.100 M NaC,H,O,. What is the pH of this solution? The K of C,H,O,H is 1.8 x 10". [15 pts] 25 3) Calculate the molar solubility of PbCl, in (a) pure water, (b) in a solution containing 0.42 M KCl....
What is the pH of a buffer solution that is 0.400 M in HF and 0.790 M in NaF? Ka of HF = 7.2 ✕ 10-4.