2 Charul gupta Asked: October 18, 20202020-10-18T09:04:16+00:00 2020-10-18T09:04:16+00:00In: Class 10 Why do acids not show acidic behaviour in the absence of water? 2 NCERT Solution for Class Tenth Science Chapter 2 Acids, Bases and Salts Exercises Questions Page No-19 Questions No-8 cbseclass10ncertscience Share Facebook 3 Answers Voted Oldest Recent Iksita Singh 2020-12-05T06:50:18+00:00Added an answer on December 5, 2020 at 6:50 am Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions (𝐻+) from an acid occurs in the presence of water only. It is the hydrogen ions (𝐻+) that are responsible for the acidic behaviour. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/ 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp raj1234 2021-02-01T17:02:07+00:00Added an answer on February 1, 2021 at 5:02 pm The acidic behaviour of acid is due to the presence of hydrogen ions. The acids will not show its acidic behaviour in the absence of water, this is because acids do not dissociate to produce H+(aq) ions in the absence of water. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp kunal shani 2023-11-16T04:59:30+00:00Added an answer on November 16, 2023 at 4:59 am Acids do not show acidic behavior in the absence of water because the characteristic properties of acids are closely tied to their behavior in aqueous solutions. The term “acid” is primarily defined within the context of aqueous solutions, and the properties of acids are a result of the presence of water. Here’s why acids do not exhibit their typical acidic behavior in the absence of water: Ionization in Water: Acids are substances that, when dissolved in water, release hydrogen ions (H+). This process is called ionization or dissociation. For example, when hydrochloric acid (HCl) is dissolved in water, it dissociates to form H+ and Cl- ions: HCl(aq) → H+(aq) + Cl-(aq) Hydrogen Ion (Proton) Transfer: The acidic behavior of acids is based on their ability to donate hydrogen ions (protons) to water molecules. This proton transfer is what characterizes acids in aqueous solutions. The hydrogen ions (H+) released by the acids can react with water (H2O) to form hydronium ions (H3O+): H+(aq) + H2O(l) → H3O+(aq) Acid-Base Reactions: Acids are also defined by their ability to react with bases. In water, when an acid and a base react, they undergo acid-base reactions, resulting in the formation of water and a salt. For example, when hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) in water, it forms water (H2O) and sodium chloride (NaCl): HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq) In the absence of water, the environment is not conducive to the ionization, proton transfer, and acid-base reactions that are essential for the expression of acidic behavior. Acids need water to provide the medium for these chemical processes to occur. Without water, the key reactions that define acids do not take place, and therefore, the typical acidic properties are not observed. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.