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Consider 5 separate solutions of 0.5 M each of the following ions, which has the highest...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and react with water to produce hydronium ions or hydroxide ions that contribute to the pH of the salt solution. Since strong acids and strong bases completely ionize in solution, the reverse reaction essentially does not occur, meaning that the resulting conjugate base of a strong acid or conjugate acid of a strong base do NOT act as acids or bases. Ions that are conjugate...
Exercise 1: Consider the following information for a series of solutions of weak acids, HA: Weak acid PK, К. If [HA], is... then [H3O+]E ... and pH HCOOH 3.74 1.8 x 10-4 0.100 M 4.2 x 10² M 2.38 HNO2 3.37 4.2 x 10-4 0.100 M 6.3 x 10-M 2.20 HCN 9.20 6.3 x 10-10 0.100 M 7.9 x 10ⓇM 5.10 4.23 0.100 M 5.9 10-M HOCI 7.46 3.5 x 10-8 0.200 M 8.3 x 10M 4.07 0.400 M 1.2...
Consider the following solutions: A) 1 M phosphoric acid (pKa 2.14) B) 1 M HCl C) 1 M acetic acid (Ka 1.74x10-5 M) D) 1 M formic acid (pKa 3.75) E) 1 M trimethylacetic acid (pKa 5.03) 1. Order these solutions from the lowest to the highest pH. 2. Order these solutions from the lowest to the highest pOH.
Which ONE of the following aqueous solutions will contain the highest total concentration of dissolved ions (assume 100% ionized and hydrated)? (A) 0.5 M Aluminium nitrate (B) 1.0 M Sodium iodide (C) 1.5 M Sodium dihydrogen phosphate (D) 2.0 M Hydrochloric acid (E) 2.5 M Lithium bromide
Question 11 Which of the following solutions will have the highest concentration of chloride ions? O A 0.10 M NaCI O 0.10 M MgCl2 O C 0.10 M AICl3 O D0.05 M CaCl2 O E All of these solutions have the same concentration of chloride ions.
1) Determine the concentration of ions present for each of the following: A) 1.5 M NaCI B) 1.0 M Na2S C) 0.5 M Na2CO3 2) Which of the solutions in question #2 has the highest boiling point? Which of the solutions in question #2 has the highest melting point? 3) A semipermeable membrane separates a 10 % starch solution (A) from a 5% starch so lution (B). 4) has the greater osmotic pressure. A) Solution into B) Water initially flows...
00250M D) 0.0625 M E) 0.375 72) Which of the following solutions will have the highest concentration of chloride ions? A) 0.10M AICI B) 0.10 M LICI C) 0.10 M MgCl2 D) 0.05 M CaCl2 E) All of these solutions have the same concentration of chloride ions. DOOM 9) How many moles of KBr are required to make 250 ml of a 3.00 M solution? A) 0.250 moles B) 0.750 moles C) 750 moles D) 3 moles How many grams...
please show all work neatly 5. (2 pts) Consider the following acids and their dissociation constants HPO4-2(aq) + H2O.. H3O"(aq) + PO4-3(aq) Ka-2.2x 10.13 HCOOH(aq) H20 H3O (a) HCOO (aq) Ka = 1.8x10-4 a. Which is the weaker acid, HPO42 or HCOOH? b. What is the conjugate base of, HPO42 or c. Which acid has the weaker conjugate base? d. Which acid produces more ions? 6. (2 pts) Write a balanced equation for the neutralization of H3PO4(aq) and NaOH(aq) (3...
00:31:58 10 11 12 13 14 Which of the following solutions will have the highest concentration of ions? O 1.0 M CaCl2 O 1.0 M sucrose O 0 O 1.0 M Na, PO4 1.0 M NHA 10 M NACI < BACK SUBMIT COMPLETED QUIZ