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Predict the net direction and whether Kc is greater or less than 1 for each of the following reactions (assume equal initial concentrations of all species):
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- Which equation shows a weak acid in water? O LIOH(s) --> Li* (aq) + OH (aq) O HF(aq) + H,0(1) E→ H30*(aq) + F(aq) O HI(aq) OH (aq) + l'(aq) O HCl(aq) + H,O(aq) ---> Cl (aq) + H;O*(aq)Which of the following reactions is an acid-base reaction? A) AGNO:(aq) + KF(aq) → AgF(s) + KNO:(aq) B) NH:(aq) + HF(aq) → NH:"(aq) + -F(aq) C) NO: (aq) + AI(s) → NH3(g) + AIO: (aq) D) CH:(g) + 202(g) - 2H:O(g) + CO:(g)(ii) Ph. - COOH
- Identify the acid, base, conjugate acid and conjugate base in the following reactions: HF (aq) + H,O (1) H;O* (aq) + F ¯(aq) CH;CH,NH, (aq) + H,O (1) CH;CH,NH;" (aq)+OH (aq)8) What is the pH of a 0.035 M HNO, solution? HNO3 (aq) + H,0 (1) H;O* (aq) + NO; (aq)Phosphoric acid, H3PO4, is a polyprotic acid. What is the THIRD ionization reaction for phosphoric acid in water? HPO (aq) → H+ (aq) + PO³ (aq) ○ H3PO4 (aq) → 3 H+ (aq) + PO¾- (aq) 4 H₂PO (aq) → HPO²¼¯ (aq) + H+ (aq) H3PO4 (aq) → H₂PO (aq) + H+ (aq)
- Which of the following would be the acid equilibrium equation for HONH;CI? A) HONH;* (aq) = NH, (aq) + он (аq) B) HONH,CI (aq) = HONH;* (aq) + Cl- (aq) C) HONH;* (aq) + H20 (1) = HONH2 (aq) + H30* (aq) D) HCI (aq) = H+ (aq) + Cl- (aq)The probe of the pH meter shown here is sitting in a beakerthat contains a clear liquid. (a) You are told the liquid ispure water, a solution of HCl(aq), or a solution of KOH(aq).Which one is it? (b) If the liquid is one of the solutions,what is its molarity? (c) Why is the temperature given onthe pH meter?Indicate the pH of the following aqueous solutions.(A) 0.0025 M H2SO4 (aq) (B) 0.0012 M KOH (aq)
- In the following acid-base equilibria of weak acids in water, label the acid (A), the base (B), the conjugate acid (CA), and the conjugate base (CB). HCIO, (aq) + H,O(1) = H,O*(aq) + CI0, (aq) H,CO, (aq) + H,O1) – H;O*(aq) + HCO; (aq) Answer Bank H,O(1) + CH;NH†(aq) = CH,NH,(aq) + H;O*(aq) СА А B СВ CH, COOH(aq) + H,O(1) - CH;COO (aq) + H;O*(aq)Which of the following are acid-base reactions? 1. AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq) 2. NH3(aq) + H2O(1) + OH-(aq) NH4" (aq) + 3. Zn(s) + 2Ag*(aq) → 2Ag(s) + Zn2+ (aq) a. 3 only b. 1, 2, and 3 c. 2 only d. 2 and 3 e. 1 onlyDetermine the pH of each solution and classify it as acidic,basic, or neutral.(a) pOH = 8.5(b) pOH = 4.2(c) pOH = 1.7(d) pOH = 7.0