Select the single best answer. Predict the direction that predominates in this reaction: NO₂ (aq) + H₂O(1) HNO₂ (aq) + OH (aq) The formation of NO₂ (aq) and H₂O (1) is favored. The formation of HNO₂ (aq) and OH (aq) is favored. Cannot be determined. X Ś
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- Potassium hydroxide (KOH) is a strong base. Dissociation of potassium hydroxide follows the reaction equation given. KOH(s) --H20--> K+(aq) OH-(aq) a) Write down the reaction equation for a neutralization reaction where potassium hydroxide (KOH) reacts with sulphuric acid (H2SO4) producing potassium sulphate (K2SO4) and water (H2O). Balance if needed! b) Calculate pH for the solution where 0,2 mol of KOH is dissolved into water so that the total volume of the solution is 0,5 L.Given the equilibrium reactions below and their equilibrium constants. H3O+ (aq) + A (aq) ⇒ HA(aq) + H₂O (1) Kc1 = 2.5 x 104 A™ + H₂O(1) OH- (aq) (aq) + HA(aq) 2.5 x 10-10 What is the value of Kc for the reaction 2 H₂O) H3O+ + OH (aq) (aq) 1.0 x 10¹4 6.3 x 10-6 1.0 x 10-14 none of the answers are correct Kc2 =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)
- Please explain it. ASAPSodium reacts violently with water according to the equation: 2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g) The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of AH° and AS° for this reaction? C) AH° is positive and AS is negative. A) AH° is negative and AS° is negative. OB) AH° is negative and AS° is positive. D) AH° is positive and AS° is positive.Choose the right variant of reaction when the following strong acid and strong base react with each other: a. HCl(aq) + RbOH(aq) → Mastered OHCl(aq) + RbOH(aq) → H₂O(1) + RbCl(s) O 2HCl(aq) + RbOH(aq) → H₂O(1) + RbCl₂ (aq) O HCl(aq) + 2RbOH(aq) → H₂O(1) + Rb₂ Cl(aq) O HCl(aq) + RbOH(aq) → H₂O(1) + RbCl(aq) b. HC1O4 (aq) + NaOH(aq) → [Review Topics] OHCIO4 (aq) + NaOH(aq) → H₂O(l) + NaClO4 (aq) OHC1O4 (aq) + 2NaOH(aq) → H₂O(1) + Na₂C1O4 (aq) HC1O4 (aq) + 3NaOH(aq) → H₂O(l) + Na3 C1O4 (aq) OHCIO4 (aq) + NaOH(aq) → H₂O(l) + NaClO4 (8) c. H₂SO4 (aq) + NaOH(aq) → H₂SO4 (aq) + 2NaOH(aq) → Na2SO4 (aq) + 2H₂O(1) O H₂SO4 (aq) + NaOH(aq) → Na2SO4 (aq) + H₂O(l) O H₂SO4 (aq) + 2NaOH(aq) → Na2SO4 (aq) + H₂O(l) H₂SO4 (aq) + 2NaOH(aq) → Na2SO4 (8) + 2H₂O(1) Submit Answer Retry Entire Group Show Hint 9 more group attempts remaining Previous S
- 8:35 : Question 22 of 23 Submit Which one of the following correctly shows the weak acid equilibrium for trichloroacetic acid, CCl,COOH? A) CCl,COOH (aq) = CCl;CO* (aq) + OH- (aq) В) Cli,COOH (аq) + H,0 (I) — СCl,COOH, (aд) + ОН- (аф) C) CCl,COOH (aq) + H20 (1) = CCI,COO- (aq) + H30* (aq) D) CCl;COOH (aq) + H2O (I) CCl,CO(OH), (aq) + H* (aq) Tap here or pull up for additional resourcesWhich 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 only11. Refer to the attached photo. Thank you!
- What is the concentration of the hydroxide ion, OH-, in solution at equilibrium if the pH of the solution is 7.65? Nitrogen and oxygen react at high temperatures according to the following equation: N2(g) +O2(g) ⇄ 2NO(g) where ∆H=181kJ At equilibrium what will happen to the concentrations of N2, O2, and NO at equilibrium if N2 is removed? Calculate the pH of the following weak base: 0.5M NH3 with Kb =1.8x10−5The pH of an aqueous solution of formic acid (HCOOH) is 3.318. What is the initial molar concentration of HCOOH, if its acid ionization constant is Ka=1.78 × 10-4? Reaction: HCOOH (aq) ↔ HCOO- (aq) + H+ (aq).The balanced molecular equation for complete neutralization of H2SO4 by KOH in aqueous solution is: Group of answer choices 2H+ (aq) + 2OH- (aq) → 2H2O (l) H2SO4 (aq) + 2KOH (aq) → 2H2O (l) + K2SO4 (aq) H2SO4 (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq) H2SO4 (aq) + 2KOH (aq) → 2H2O (l) + K2SO4 (s) 2H+ (aq) + 2KOH (aq) → 2H2O (l) + 2K+ (aq)