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

D Four solutions of an acid dissolved in water are sketched below, as if under a microscope so powerful individual atoms could be seen. The same volume of solution is shown in each sketch. Rank the solutions by the strength of the dissolved acid. That is, select 1 under the solution of the strongest acid, 2 under the solution of the next strongest acid, and so on. Note: Solution 1 (Choose one) 2 = H₂O Explanation Solution 3 (Choose one) ▼ W S ▼ Check 3 747 E D (Choose one) Solution 2 $ (Choose one) 4 Solution 4 R % 5 T X 80 G 6 3 MacBook Pro Y & 7 H © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | A U 8 J 1 ( 9 ➡ K ) O O P O

Sodium 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.

Hydrosulfuric acid, also known as hydrogen sulfide, is a diprotic acid. Its two stages of ionization are shown below: H2S (aq) = H* + HS'(aq) HS (aq) SH* + S² (aq) Kaj = 5.70 x 108 Kaz = 1.00 x 10 %3D Calculate the concentration of HS ion in a 0.222 M H2S solution. x 10 Enter your answer in scientific notation with three significant figures.

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 resources

Methanoic acid is also called formic acid. It has the chemical formula HCOOH(l). It is a colourless fuming liquid that is mainly used as a preservative. It exhibits the following equilibrium in water:HCOOH(aq) + H2O(l) → HCOO–(aq) + H3O+(aq) 3) A 35.0 mL sample of (monoprotic) lactic acid, C3H6O3, is titrated with 20.0 mL of a 4.0 x 10-4 mol/L sodium hydroxide solution. What is the pH of the resulting solution at the equivalence point, if Ka for lactic acid is 1.4 x 10-4? PLEASE HELP THIS IS VERY URGENT

Match the acid to the correct chemical equation showing its reaction with water. hydrochloric acid  hypochlorous acid chlorous acid chloric acid perchloric acid A. HClO2(aq) + H2O(l)  ⇌ ClO2−(aq) + H3O+(aq) B. HCl(aq) + H2O(l)  ⇌ Cl−(aq) + H3O+(aq) C. HClO2(aq) + H2O(l)  → ClO2−(aq) + H3O+(aq) D. HClO3(aq) + H2O(l)  ⇌ ClO3−(aq) + H3O+(aq) E. HClO(aq) + H2O(l)  → ClO−(aq) + H3O+(aq) F. HClO(aq) + H2O(l)  ⇌ ClO−(aq) + H3O+(aq) G. HClO4(aq) + H2O(l)  → ClO4−(aq) + H3O+(aq) H. HClO3(aq) + H2O(l)  → ClO3−(aq) + H3O+(aq) I. HClO4(aq) + H2O(l)   ⇌ ClO4−(aq) + H3O+(aq) J. HCl(aq) + H2O(l) → Cl−(aq) + H3O+(aq)

The balanced reaction between aqueous potassium hydroxide and aqueous acetic acid is ________. explain me. Please!     KOH (aq)  +  HC2H3O2 (aq)  →  OH- (l)  +  HC2H3O2+ (aq)  +  K (s)     KOH (aq)  +  HC2H3O2 (aq)  →  H2O (l)  +  KC2H3O2 (aq)     KOH (aq)  +  HC2H3O2 (aq)  →  H2C2H3O3 (aq)  +  K (s)     KOH (aq)  +  HC2H3O2 (aq)  →  KC2H3O3 (aq)  +  H2 (g)     KOH (aq)  +  HC2H3O2 (aq)  →  H2KC2H3O (aq)  +  O2 (g)

What is the approximate K for the following acid/base reaction? H25 (aq) +F (aq) ++ HF (aq) +HS (aq) ACID BASE HCI C H2SO4 HNO3 H30 (aq) HSO H3PO4 HSO NO3 H2O so, H,PO, F HF CH3COOH H,CO3 H,S H,PO, NH, CH;COO HCO, HS HPO, NH, CO PO OH HCO HPO. 1,0 OH H, CH CH, OA unable to determine OB. K.<1 Base strength increasing Acid strength increasing

The 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).