1:56 al LTE Question 31 of 32 Submit Which of the following salts is most likely...
Which of the following salts is most likely to form an aqueous solution having the pH = 10.94? LiBr Zn(NO3)2 9 КСIO, NaCN NHACI
2:14 al LTE Question 25 of 32 Submit What is the Ka for a weak monoprotic acid (HA) if a 0.020 M solution of the acid has a pH of 3.23 at 25°C? A) 3.5 x 10-4 B) 5.9 x 10-2 C) 1.7 x 10-5 D) 1.2 x 10-6 2:14 al LTE Question 26 of 32 Submit What is the pH of a solution with an initial concentration of 0.42 M hypochlorous acid, HOCI (Ka = 3.0 x 10-9). A)...
2:12 al LTE Question 22 of 32 Submit A solution has a hydroxide-ion concentration of 0.18 M. What is its pH? A) 0.74 B) 13.26 C) 5.56 D) 0.18 2:12 al LTE Question 23 of 32 Submit Which one of the following correctly shows the equilibrium for the weak base quinoline, C.H.N? A) CEH,N (aq) + 2 H20 (1) = CH NH2* (aq) + 2 OH- (aq) B) C3H7N (aq) + H20 (1) = CH NH+ (aq) + OH- (aq)...
11. which of the following pairs of species is a conjugate acid-base pair? a. NaF, F b. NHs, NH c. H30+, ОН- d. H2CO3, CO32 8. which of the following salts is most likely to form an aqueous solution having the pH <7? a. NaBr b. LiNO3 c. NH4CI d. RbCN 2. which of the following pairs of species is not a conjugate acid-base pair? a. OH, H b. HOCI, OCh c. HSO4,SO42 d. H2CO3, HCO3 11. which of the...
2:06 LTE Question 29 of 32 Submit Which of the following would be the base equilibrium equation for CsCIO? A) CsCIO (aq) = Cs+ (aq) + CIO- (aq) B) CIO- (aq) + H20 (1) = CIOOH (aq) + H3O+ (aq) C) CIO- (aq) + H20 (1) = H2C1O2 (aq) D) CIO- (aq) + H20 (1) =HCIO (aq) + OH- (aq)
9:08 LTE Question 22 of 23 Submit Under what conditions are gases most likely to behave ideally? A) High pressures B) Low temperatures C) Polar molecules D) Low pressures E) Large molecules Tap here or pull up for additional resources
1:08 el LTE Question 13 of 32 Submit What is the hydronium-ion concentration of a 0.25 M HCl solution? A) 0.50 M B) 0.25 M C) 4.00 x 10-14 D) 1.00 x 10-7
6:23 LTE Question 1 of 37 Submit An aqueous solution of Mg (NOs)2 and NaOH generates the solid precipitate Mg(OH)2. Which of the following would NOT appear in the corresponding net ionic reaction? A) Mg2 B) NO3 C) OH D) Mg(OH)2 E) Both (A) and (C) Tap here or pull up for additional resources 6:23 LTE Question 3 of 37 Submit Balance the following chemical reaction: Al2(SOa)3 (aq)K,PO. (aq) AIPO. (s) + K2SO& (aq) A) Al2(SOa)3 (aq) 2 K3PO4 (aq)...
ail LTE 8:56 Question 7 of 23 Submit Consider two 5 Lchambers. In one, there are 5.00 g O2, and in the other there are 5.00 g He. Which has the higher pressure at room temperature? A) O2 B) He C) They have equal pressures D) Not enough info Tap here or pull up for additional resources
1. Determine if an aqueous solution of the following salts would be acidic, basic or neutral. Write an explanation for your answer for each salt. (2 pts each) a) LiBr b) Na2CO3 c) KHSO3 d) NH4NO3