Question 23 3 pts Which of the following would be a good system to use to...
Question 9 1 pts A certain buffer is 0.5 M HF and 0.3 M NaF. Which solution has the same pH as this buffer? 0.05 M HF and 0.03 M NaF 0.005 M HF and 0.003 M NaF OOO 0.0005 M HF and 0.0003 M NaF All of them have the same pH Question 10 Which buffer has the largest buffer capacity? 0.5 M HF and 0.3 M NaF 0.05 M HF and 0.03 M NaF 0.005 M HF and...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid and its salt, NaF? The HF neutralizes the added acid. The HF neutralizes the added base. The NaF neutralizes the added H20. The HF is not a necessary component.
Please show all work as needed
and provide correct multiple choice answer. Thanks
5. You are preparing a buffer of pH = 8.95 for an experiment. Your lab partner has already added 0.0455 moles of HBrO to a flask containing 1.00 L of water. A. (8 pts) You need to add some NaBrO to finish the buffer preparation. How many moles of NaBrO are required? Assume that the volume of the solution won't change when you add the solid. pK...
Question 1 1 pts Consider a solution that is 0.1 M HF and 0.1 M NaF. This is a mixture of conjugates in equal proportions, which tells you that it is a buffer. What two reactions are relevant to the pH in this situation? NaF --> Nat + F F+H2O <--> HF + OH- HF + NaF --> H+ +Na+ + F2 HF <--> H+ +F Ht+F<--> Nat + F" Question 2 1 pts A buffer solution contains a mixture...
D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? O 10MHNO, and 10M NOH O 10M NaF and 10M NOH 1.0MHF and 10M NAOH O 20 MHNO, and 20 M LINO, O 10M HF and 1.0 MUF
Which is true for the following titrations. Question 3 options: 123 The titration of a strong base using a strong acid. 123 The titration of a weak base using a strong acid. 123 The titration of a weak acid using a strong base. 1. The pH at the equivalence point is approximately equal to 7.0. 2. The pH at the equivalence point is less than 7.0 3. The pH at the equivalence point is greater than 7.0. Question 4 (1...
D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? 10 M HNO3 and 1.0 M NaOH O 1.0 M NaF and 1.0 M NaOH O 1.0MHF and 1.0 M NaOH O2.0 M HNO3 and 2.0 M LINO3 O 1.0M HF and 1.0 M LIF 1 pts Question 7 Equal volumes of 0.50 MHBr and 0.50 M NH3 are mixed together. The resunting solution can...
Unit 23 Acids and Bases, pH and Buffers Prelab for Lab 23 Acids and Bases, pH and Buffers Name Section Date 1. Circle the bases in the following list: HCI NHS NaOH HNO: CH3COH CH3NH2 H2SO4 NaCl HCIO 2. Fill in the blanks to the correct number of significant figures: ну (он) PH 2.34 | | 4.6 x 10 | | | 6.623 x 10" | | | | 8.3 x 102 (over) | 199 Unit 23 Acids and Bases,...
Question 6 (5 points) Of the following solutions, which has the greatest buffering capacity? O 0.121 M HF and 0.667 M NaF O 0.821 M HF and 0.909 M NaF 0.100 M HF and 0.217 M NaF They are all buffer solutions and would all have the same capacity.
Question 21 3 pts Which of the following would represent a buffer solution? HF/HCI OHC,H,O,CVNIC,H,O,CI NaOH/NaCl OHCHO/NH3