23. Ammonium hydroxide is a weak base because? Ammonia is a typical weak base. Answer: c Explaination: Reason: Sodium hydroxide ionises in water and produces a large amount of hydroxide ions. B) it is only slightly soluble in water. Such is ammonium hydroxide; NH₃ + H₂O ⇄ NH₄⁺ + OH⁻ In the ionization of a weak base, the process results in an equilibrium reaction. Sodium hydroxide is a (a) weak base (b) weak acid (c) strong base (d) strong acid. Which of the following is not a acidic salt? What is formed when zinc reacts with sodium hydroxide? Studyrankers is a free educational platform for cbse k-12 students. Answer: A weak base is a base that does not ionize fully in an aqueous solution. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. In terms of acidic strength, which one of the following is in the correct increasing order? c. it is completely ionized in aqueous solution. If pH of solution is 13, it means that if is, 25. D) it dissociates only slightly in water. Sodium carbonate is a basic salt because it is a salt of a, 13. A weak base is one that partially or slightly ionizes in an aqueous solution. Cloudflare Ray ID: 5f997dad7b080853 Assertion: Ammonium hydroxide is Weak Base. 500+ SHARES. 11. Excess addition of which of the following solution would reverse the change? a. it cannot hold on to its hydroxide ions. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Performance & security by Cloudflare, Please complete the security check to access. 6. Excess addition of which of the following solution would reverse the change? Assertion: Universal indicator gives green colour with distilled water. Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH 2 OH. 58. When copper oxide and dilute hydrochloric acid react, colour changes to, 27. (d) A is false but R is true. Which one of the following salts does not con-tain water of crystallisation? An aqueous solution turns red litmus solution blue. Ammonium hydroxide is a weak base because 400+ LIKES. 5. • Share this. Reason: pH of distilled water is 7 and it is neutral and universal indicator gives green colour with neutral solution. Answer to: Ammonium hydroxide is a weak base. 44. 45. 31. Ammonium hydroxide is a weak base because it does not dissociate completely into ions. 7. Answer: D 26) An acid and base react to form a salt and water in a(n) _____ reaction. 10. 25) Ammonium hydroxide is a weak base because A) it is a dilute solution. A strong base is one that ionizes completely in solution. Sodium hydroxide turns phenolphthalein solution. Reason: Phenolphthalein becomes pink in NH 2 OH (a) Both A and R are true and R is the correct explanation of A. d. it is only slightly soluble in water. (b) Both A and R are true but R is not the correct explanation of A. The clear supernatant solution turns the pH paper yellowish-orange. (c) A is true but R is false. Assertion: Bleaching power liberate chlorine when kept in atmosphere. (d) aqueous solution of sodium bicarbonate, ► (c) aqueous solution of sodium chloride. That's why ammonium hydroxide is a weak base. 33. 2.Ammonium hydroxide partially dissociates in the water to OH − ions and N H 3. . If we take 20 mL of same solution of NaOH, the amount of HCl solution required to neutralize it will be. Answer/Explanation. Answer/ Explanation. 32. (a) Water < Acetic acid < Hydrochloric acid, (b) Water < Hydrochloric acid < Acetic acid, (c) Acetic acid < Water < Hydrochloric acid, (d) Hydrochloric acid < Water < Acetic acid, ► (a) Water < Acetic acid < Hydrochloric acid, 12. An aqueous solution turns red litmus solution blue. A solution reacts with crushed egg-shells to give a gas that turns lime-water milkey. Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH4OH Read the statements carefully and choose the correct alternative from the following: * 1 point (a) both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. What we call "ammonium hydroxide" is actually ammonia, NH3, dissolved in water, in equilibrium with small amounts of NH4+ and OH-. How many water molecules does hydrated calcium sulphate contain? Excess addition of which of the following solution would reverse the change? 500+ VIEWS. 39. It therefore, can't "dissociate to a slight extent," because there aren't any molecules of NH4OH to dissociate. 20. Calcium phosphate is present in tooth enamel. CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. (c) A is true but R is false. Get more help from Chegg. (a) Both A and R are true and R is the correct explanation of A. Text Solution. 38. snehasouravp snehasouravp Answer:both assertion ad reason are true but reason is no the correct explanation of the assertion. At what temperature is gypsum heated to form Plaster of Paris? Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH4OH Read the statements carefully and choose the correct alternative from the following: *1 point (a) both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion (b) The Assertion and - Science - Acids Bases and Salts Molecules of "ammonium hydroxide" don't exist. It has low vapour pressure It is only slightly ionized It is not a hydroxide … E) it is completely ionized in aqueous solution. Its nature is, Reason: Phenolphthalein becomes pink in NH. Nettle sting is a natural source of which acid? 10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. The solution contains, 30. Which of the following would change the colour of this pH paper to greenish-blue? If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. The odour of acetic acid resembles that of. Answer: b Explanation: (b) The Assertion and the Reason are correct but the Reason is not the correct explanationof the Assertion. An aqueous solution turns red litmus solution blue. (d) A is … So they are considered as weak acids. (b) Both A and R are true but R is not the correct explanation of A. Most strong bases are hydroxides of alkali and alkaline earth metals. 34. C) it cannot hold on to its hydroxide ions. A drop of liquid sample was put on the pH paper, paper turned blue. 21. A sample of soil is mixed with water and allowed to settle. Chemistry. Which one of the following types of medicines is used for treating indigestion? 44. b. it dissociates only slightly in water. Question 20 Ammonium hydroxide is a weak base because it only forms dilute solutions it is actually an acid it is only partially soluble in water it only slightly dissociates in water . (e) Both A and R are false. (b) Both A and R are true but R is not the correct explanation of A. Ammonia itself obviously doesn't contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. C6H5COOH (weak) C6H5OH ammonium iodide CH3COCH3 C5H5NHBr MgSo4 aspirin (weak) vitamin C acetaminophen NH4NO3 SeO3 CH3CO2-Magnesium Oxide NaHSO3 NaH2PO4 H2C2O4 CH3NH3I KH2PO4 NH4F KHSO4 ... Answer : ammonium hydroxide ( NH4OH ) is base. Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH2OH (a) Both A and R are true and R is the correct explanation of A. Earth metals and gives you temporary access to the web property completing the CAPTCHA proves you a...: d 26 ) an acid and base react to form a salt a. 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