3) Which of the following buffer solutions has the highest buffer capacity? 0,10MH,PO,/0.10M HPO b) 0.60MH, PO /0.6...
which of the following has the highest buffer capacity? A 0.10M H2PO4-/0.10M HPO4 -2 B 0.50 M H2PO4-/0.10 M HPO 2- C 0.10 M H2PO4-/0.50 M HPO4 2- D 0.50 M H2PO4-/0.50M HPO4 2- E They all hae the same buffer capacity. There is a group of us working together.
9) Which of the following solutions will have the highest concentration of chloride ions? (A)0.10M MgCl2 (3)0.10m NaCl 60.05 Mcally D) 0:10M ALCl3 EAll of the above 10 Which of the following is strong electrolyte in solution (A) Pb MnOy (B) Feliz ☺ cas ) CH3COOH EDNICOU 10 All of the following compounds are soluble EXCEPTI (A) Ag Br (BPb(NO3)₂ (C) Ba(OH), (D) ZnCl2 (E) Cu (Caltz 02 12) Determine the oxidation state of nitrogen in No. A) +4 (B)+3...
5. Phosphate serves as the intracellular buffer. Its ionization is shown below. H3PO4 + H,PO HPO 2 + H + HPO.-- +PO3 + H PK, = 2.14 pK, = 6.86 PK, = 12.4 What ionic forms would be present in the cell at pH 7? A. All forms would be present. B. HPO and PO43- C. H PO, and HPO 2- D. HPO4 E. H2PO4
10. Which of the following mixtures has lower pH a) Equal volumes of 0.10M HCIO, and 0.10M NaOH b) Equal volumes of 0.10M HCIO and 0.10M NH Ans: 1. Does the pH increase, decrease or remain same on addition of each of the following a) NH4NO) to NHs solution Ans: b) Na:CO) to NaHCO3 solution Ans: c) NaCIO4 to NaOH solution Ans: 12. Which of the following solutions give a buffer solution when equal volumes are mixed? a) 0.10M NaF...
You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa CH3COONa, and NaH2PO4 Part A Which solutions would you use? Check all that apply. HCOOH CH3COOH H3PO4 HCOONa CH3COONa NaH2PO4 Submit Request Answer
Disregard the pencil markings. 0.01M 0.01M 0.01M 0.01M 0.10M 0.10M 0.1OM 0.10M NaCl 2. 3 2 2. Answer the questions below that relate to the 8 aqueous solutions at 25° C shown above. a) Which solution has the lowest freezing point? Explain. b) Above which solution is the pressure of the water vapor the greatest? Explain.N3, c) Which solution has the lowest boiling point? Explain. d) Which solution has the highest pH? Explain. K6H e) Identify the pair of solutions...
13. Which are the Bronsted BASES in the following reaction?.njanela H-PO: (aq) + CN (aq) →HPO/?"(aq) + HCN (aq) a) H PO, and HPO.2 b) H PO, and HCN c) CN and HPO d) CN and HCN Helou HCl A Br HI 14. Put the following acids in order in terms of increasing acid strength and explain why. Which of the following is NOT -conjugate acid-base pair a) HI< HBr< HCI<HF. The size of the halide is decreasing and the...
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 2- all 4 parts. please type orwritr clearly thank you! 2. Buffer capacity refers to the amount of acid or base a buffer can "absorb without a significant pH change. It is governed by the concentrations of the conjugate acid and base components of the buffer. A 0.5 M buffer can "absorb" five times as much acid or base as a 0.1 M buffer for a given pH change. In this problem you begin with a buffer of known...
a) Which one of the following materials has the highest heat capacity? (3 points) 1) Metals 2) Ceramics 3) Polymers 4) Composites