Thus, ammonia acts as a base in both the Arrhenius sense and the Brønsted-Lowry sense. Since HPO42- is the only compound from the options that can act as a base, the answer is (b) HPO42-. For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. In the reverse reaction, \(H_3O^+\) is the acid that donates a proton to the acetate ion, which acts as the base. A. Bronsted Lowry acid; Cr can donate the H atom. NH4+ In the following chemical equation indicate the reactant that is a Br∅nsted-Lowry acid. (C-14 t1/2 = 5,730 years). \[\ce{CH3CO2H + H2O <=> H3O^{+} + CH3CO2^{-}} \nonumber\]. (water molecules are not shown). What is the SI unit in the measurement of radioactivity? Which species is the conjugate acid of HCO3-? Which species completes the nuclear equation shown below? NH2-Which species is the conjugate base of NH3? Here, it is clear that HPO42- is the acid since it donates a proton to water to make H3O+ and PO43-. What is the minimum recommended protective equipment when handling a beta particle emitter? What are the number of protons, the number of neutrons, and the mass number of the radioisotope . What is the net ionic equation for the acid-base reaction of hydrobromic acid with sodium hydroxide? Which species can act as a Brønsted-Lowry acid? Because C6H5NH2 accepts a proton, it is the Brønsted-Lowry base. Now consider the following equation: \[ \ce{ HPO4^{2-}(aq) + H2O(l) \rightarrow H2PO4^{-} + OH^{-}(aq)} \nonumber\]. Show By Suitable Net Ionic Equations That Each Of The Following Species Can Act As A Brønsted-Lowry Acid: (a) HNO3 (b) PHỐ CH S (d) CH3CH2COOH (e) HPO 4 - (f) HS 5. Which type of radiation has a negligible mass and a charge of +1? Which quantity represents the greatest amount of radioactivity? 8.13. The pH of a lime is 1.90. Lewis acid receive electron pairs, whilst Lewis bases donate them. A Bronsted-Lowry base is a chemical species capable of accepting a proton. Answer Save. A Brønsted-Lowry acid is any species that can donate a proton (H+) to another molecule. see sheet. Have questions or comments? Because the water molecule donates a hydrogen ion to the ammonia, it is the Brønsted-Lowry acid, while the ammonia molecule—which accepts the hydrogen ion—is the Brønsted-Lowry base. Bronsted-Lowry acid .... A BL acid is a proton (H+) donor. see sheet, Which nuclear equation is an example of positron emission? Show transcribed image text . Which solution containing an equal number of moles of each of the substances is a buffer? The neutralization reaction is: NaOH(aq) + HBr(aq) → H2O(l) + NaBr(aq). What is the [H3O+]? For example, consider the acid-base reaction that takes place when ammonia is dissolved in water. What volume of solution must be administered per dose? Show By Suitable Net Ionic Equations That Each Of The Following Species Can Act As A Brønsted-Lowry Acid: (b) PH4+ 6. Which amount of radioactivity is equivalent to 4.1 × 1012 disintegrations/s? What are the products of the acid-base reaction of sodium carbonate with acetic acid? Write the chemical equation for this reaction and identify the Brønsted-Lowry acid and base. A) NaH B) NH4+ C) CH3NH2 D) C6H6. What is the estimated the age of an artifact that has 1/16 of the amount of carbon-14 (relative to carbon-12) compared to living organisms. Assuming that normal gastric juice is primarily aqueous HCl, what is the concentration of HCl in the stomach? Identify the conjugate acid-base pairs in this equilibrium. Which amount of radioactivity is equivalent to 3.7 × 105 mCi? Which salt forms a basic solution when dissolved in water? C6H5NH2 and H2O are the reactants. After a Bronsted-Lowry acid donates a proton, it forms its conjugate base. The half-life (t1/2) of a radioactive isotope depends on which of the following? amphoteric: a species that can act as an acid or a base water is an example of an amphoteric species ... etiher the Brønsted-Lowry acid, the Brønsted-Lowry base, the conjugate acid, or the conjugate base. H 2SO 4 (aq) + HPO 4 2– (aq) ! Thus, HPO42- is an acid and base together, making it amphoteric. Anonymous. What is the molarity of an HCl solution if 43.6 mL of a 0.125 M KOH solution are needed to titrate a 25.0 mL sample of the acid according to the equation below? A) NaH B) NH4+ C) CH3NH2 D) C6H6. C.a compound that is a proton acceptor. Not a Bronsted Lowry acid; Cl^- is a base and it cannot donate a proton. Lv 7. Identify the Brønsted-Lowry acid and the Brønsted-Lowry base in this chemical equation. The [-OH] in a sample of egg whites is 6.3 × 10-7 M. What is the [H3O+] in these egg whites? The [H3O+] in a cabernet sauvignon wine is 5.9 × 10-4 M. What is the [-OH] in this wine? 3 Answers. Aniline (C6H5NH2) is slightly soluble in water. Which of the following solutions would have the lowest pH? The reaction is as follows: \[\ce{C6H5NH2(aq) + H2O(ℓ) <=> C6H5NH3^{+}(aq) + OH^{−}(aq)} \nonumber\]. a) NaH b) NH4+ c) CH3NH2 d) C6H6. How many milliliters of 0.653 M NaOH are needed to neutralize 25.0 mL of a 1.02 M HBr solution? Get 1:1 help now from … A.CO32-B.HBr C.H2CO3 D.NH4+ A. As the hydrogen ion donor, HCl acts as a Brønsted-Lowry acid; as a hydrogen ion acceptor, H2O is a Brønsted-Lowry base. What is the expression for Kw, the ion-product constant for water? the parent base and its conjugate acid (\(H_3O^+/H_2O\)). Which term correctly describes the medical condition in which the pH of blood is greater than 7.45, and therefore the blood is more basic than normal? 15M.2.sl.TZ1.6e: Explain whether BF3 can act as a Brønsted-Lowry acid, a Lewis acid or both. We can depict this process using Lewis electron dot diagrams: Now we see that a hydrogen ion is transferred from the HCl molecule to the H2O molecule to make chloride ions and hydronium ions. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. A Brønsted-Lowry base is any species that can accept a proton from another molecule. What is the pH of a cleaning solution with a (H3O+) = 7.4 x 10^-9 M H3O+? see sheet, Which nuclear equation is an example of β decay? Which radioisotope is used to measure thyroid activity and treat thyroid disease? Is an Arrhenius acid like hydrochloric acid still an acid in the Brønsted-Lowry sense? Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. When phosphoric acid (H3PO4) dissolves in water, the equilibrium shown below is established. Which diagram properly depicts the dissolved species present in an aqueous solution of KOH? 235,92 U + 1,0 n--> 137,52 Te + 97,40Zr, 2:1,0n, Which nuclear equation is an example of α decay?
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