RUVILUULI Q. #1. The equilibrium constant for the auto-ionization of water 2H30 (I) = H3O'(aq) +...
Q. #1. The equilibrium constant for the auto-ionization of water 2H,0 (1) = H,0 (aq) + OH (aq) is 1.0 x 10" at 25°C and 3.8 x 10" at 40°C. Is the forward process endothermic or exothermic? Need to show your calculation. Ans: exothermic
Q#5. Calculate the pH of 0.15M C,HNH,1 (Strong electrolyte) solution. (K = for CH-NH, = 5.6 x 106.). Ans: 2.03 Q# 6. Calculate the pH and percent ionization of a 0.88 M HNO, Solution at 25°C. (K of HNO, = 4 x 10'.). Ans: 1.73 and % of ionization = 2.13 Q.#7. Calculate the pH of a 0.609 M aqueous solution of Hypobromus acid (HBrO), for which K = 2.06 x 10". Ans: 4.45 Q#8. What is the pH of...
Name: CHM 1202 Calculating pH of Acid Solutions - Reading Guide Strong Acids List and memorize the six strong acids shown in Figure 14.6. Calculate the pH of an 0.22 M solution of HBr. Remember: Strong acid solutions completely dissociate so the (acid] = [H,O']! (ans. pH=0.66) Weak Acids What is the difference between a strong acid and a weak acid? Write the K. equation for HNO2 Write the K, equation for HC H302 For weak acids, an ICE table...
Strong Acids and [H'] (and pH) The pH of a strong acid is the concentration of the strong acid. 1.OM HCI makes 1.OM H. Except H2SO4. Its pH is a little lower than that because: H2SO4(aq) H+ (aq) + HS07 (aq) Strong acids generally have K.>>1. We assume K = . The HSO, is a weak acid: HSO2 (aq) + H+ (aq) + S0 - Ka = 1.2 * 10-2 Weak Acids and [H+] (and pH) These are weak electrolytes....
7. The equilibrium constant for the auto-ionization of water HO () (aq)OH (aq) is 1.0x 10 at 25°C and 3.8 x 10 at 40C. a. Is the forward process endothermic or exothermic? b. What is the pH of the water at 40 C? c. Based on your calculated pH, is this solution acidic or basic? d. Which of the following statements is consistent with this behavior? i. The autoionization of water is an endothermic reaction i. The autoionization of water...
estion 41 of 65 > Look up the ionization constant (K) values for the given acids. acetic (ethanoic) acid: K = formic (methanoic) acid: Ka = propanoic acid: Ka = Arrange the acids according to strength. Strongest acid Weakest acid Answer Bank propanoic acid formic acid acetic acid Question 61 of 65 > What is the pH of an aqueous solution with a hydroxide ion concentration of 1.60 x 10-4 M? 14.2 O 3.80 0 -0.204 O 10.2 estion 64...
Worksheet Week 10 Name: 1. During strenuous exercise lactic acid builds up in a muscle tissues. In a 1.00 Maqueous solution 2.94% of lactic acid is ionized. What is the value of its ka? 2. At equilibrium of (H') in a 0.250 M solution of an unknown acid is 4.07 x 10 M. Determine the degree of ionization and the Ka of this acid. 3. The venom of biting ants contains formic acid, HCOOH, Ka = 1.8 x 10-Mat 25°C....
please help with this hw ?! Answer the Q. In the spaces below. Use the back of the page if necessary. 1. Give the conjugate bases for the following Bronsted-Lowry acids: a) H2SO4 b) HNO; c) H20 d) OH e) H3PO4 Ans. a). 2. Give the conjugate acids for the following Bronsted-Lowry bases: a) CO32- b) HPO42. c) H2PO4 d)NH2 e) NH3 Ans. a) b) 3. Calculate the pH of a 0.025 M solution of barium hydroxide. 4. Show how...
Please need help! Thank you! Write the equilibrium expression for the ionization of HOI, and calculate the concentration of HOl(aq) in solution if [H 2.3 x 10 M and Ka 2x 1011 at 25"C
Question 1 : HA is a weak acid. Its ionization constant, Ka, is 1.2 x 10-13. Calculate the pH of an aqueous solution with an initial NaA concentration of 0.075 M. Question 2 : We place 0.143 mol of a weak acid, HA, in enough water to produce 1.00 L of solution. The final pH of the solution is 1.28 . Calculate the ionization contant, Ka, of HA. Question 3 : We place 0.661 mol of a weak acid, HA,...