20. Ammonia itself obviously doesn't contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. (d) aqueous solution of sodium bicarbonate, ► (c) aqueous solution of sodium chloride. (b) Both A and R are true but R is not the correct explanation of A. 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. • An aqueous solution turns red litmus solution blue. 39. Molecules of "ammonium hydroxide" don't exist. Assertion: Universal indicator gives green colour with distilled water. Sodium hydroxide turns phenolphthalein solution. Ammonium hydroxide is a weak base because? 16. 35. snehasouravp snehasouravp Answer:both assertion ad reason are true but reason is no the correct explanation of the assertion. Such is ammonium hydroxide; NH₃ + H₂O ⇄ NH₄⁺ + OH⁻ In the ionization of a weak base, the process results in an equilibrium reaction. (b) Both A and R are true but R is not the correct explanation of A. In water, there are no NH4OH molecules to be a "weak base." Answer/ Explanation. The H + ion concentration of a solution is 1.0×10, 15. A weak base is one that partially or slightly ionizes in an aqueous solution. e. it is a dilute solution. The odour of acetic acid resembles that of. A strong base is one that ionizes completely in solution. 500+ VIEWS. 500+ SHARES. (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. Answer: D 26) An acid and base react to form a salt and water in a(n) _____ reaction. What we call "ammonium hydroxide" is actually ammonia, NH3, dissolved in water, in equilibrium with small amounts of NH4+ and OH-. Your IP: 37.187.29.226 (d) A is false but R is true. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Its nature is, Reason: Phenolphthalein becomes pink in NH. Excess addition of which of the following solution would reverse the change? Text Solution. Nettle sting is a natural source of which acid? Which of the following would change the colour of this pH paper to greenish-blue? What are the species that will be found in an aqueous solution of NH4OH? 21. 34. By Bagus Amin - 9:11 AM - Add Comment. Sodium hydroxide is a (a) weak base (b) weak acid (c) strong base (d) strong acid. 23. C) it cannot hold on to its hydroxide ions. If we take 20 mL of same solution of NaOH, the amount of HCl solution required to neutralize it will be. 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. (a) Both A and R are true and R is the correct explanation of A. 10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. 44. (c) A is true but R is false. CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. How many water molecules does hydrated calcium sulphate contain? 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. d. it is only slightly soluble in water. 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. 2.Ammonium hydroxide partially dissociates in the water to OH − ions and N H 3. . 6. A drop of liquid sample was put on the pH paper, paper turned blue. 44. 32. In terms of acidic strength, which one of the following is in the correct increasing order? Assertion: Ammonium hydroxide is Weak Base. The odour of acetic acid resembles that of. Calcium phosphate is present in tooth enamel. Answer: b Explanation: (b) The Assertion and the Reason are correct but the Reason is not the correct explanationof the Assertion. Which one of the following salts does not con-tain water of crystallisation? Share this. Get more help from Chegg. c. it is completely ionized in aqueous solution. 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. If pH of solution is 13, it means that if is, 25. 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 5. 11. Assertion: Ammonium hydroxide is Weak Base Reason: Phenolphthalein becomes pink in NH 2 OH.