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Ammonia’s chemical formula is NH3 and has a trigonal pyramidal shape with a Nitrogen atom on the pyramid top and 3 hydrogen atoms at the 3 base corners. Notice the lone pair on the nitrogen atom (Photo Credit : Ben Mills / Wikimedia Commons). (Photo Credit : ESA/Hubble / Wikimedia Commons). NH3 under suitable condition act as a weak base and accepts H+ and forms its conjugate acid NH4+ and under different condition NH3 will act as an extremely weak acid and give away H+ ion to form its conjugate base NH2-. What is Quantum Entanglement: Explained in Simple Words. Ammonia is a colorless gas that is found in very small quantities in nature. Why Are There Stones Alongside Railway Tracks? Nitrogen has one lone pair of electrons left after sharing 3 electrons to form bonds with 3 hydrogen atoms. Circle Of Willis: Anatomy, Diagram And Functions, Sheepshead Fish: Facts About The Fish With Human Teeth. What are Glial Cells: Definition, Types, Functions of Glial Cells | Role in Psychology. We know that, in NH3, Nitrogen(N) has 5 electrons in its valence shell with the configuration of (1s2, 2s2, sp3) and Hydrogen has only 1 electron with the configuration of (1s1). A strong base is the one that gives away the hydroxyl ion readily while the weak base loses the ion slowly. Below is the reaction where NH3 forms its conjugate acid and conjugate base simultaneously. (NH3 acting as a weak acid)      Li + NH3 ——-> LiNH2 + H2. Why Are There Stones Along Railway Tracks? Ammonia itself obviously doesn't contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. This trigonal pyramidal shape provides the molecule with a dipole moment and makes it a polar molecule. The lone pair provides some repulsion to bonds due to which the angle is slightly less than the tetrahedral. Ammonia is a weak base because its nitrogen atom has an electron pair that readily accepts a proton. It is the production of these hydroxide ions that imparts ammonia its characteristic basicity.eval(ez_write_tag([[728,90],'scienceabc_com-medrectangle-3','ezslot_1',169,'0','0'])); There are a few chemical compounds that are particularly well-known for how remarkably smelly they are. According to the VSEPR theory, the chemical structure of Ammonia is trigonal pyramidal with bond angles of 107.5 degrees. Why Don't They Have Parachutes For Passengers In Commercial Planes? He spends a lot of time watching movies, and an awful lot more time discussing them. Also known as azane (its IUPAC name), its chemical formula is NH3. Often students wonder about whether NH3 is an acid or base. When a weak base reacts with water, the position of equilibrium varies from base to base. It is a highly toxic gas that can cause lung damage or even death due to prolonged exposure to Ammonia. As explained earlier, although NH3 is a weak base and standard solution of ammonia has a pH 11 but still, it is amphoteric in nature which means it can act as both acid as well as a base under different conditions. Also, when dissolved in water, ammonia acquires hydrogen ions from water to produce hydroxide and ammonium ions. eval(ez_write_tag([[300,250],'techiescientist_com-banner-1','ezslot_4',106,'0','0'])); When put in water, NH3 readily mixes with water due to its polar nature and ability to form hydrogen bonds in water. NH3 also perform self dissociation and carries out redox reaction under certain conditions. we respect your privacy and take protecting it seriously. Explaining the term "weak base" Ammonia is a typical weak base. When NH3 reacts with H+ ion, it donates its lone pair to H+ ion and forms NH4+ as conjugate acid. Ammonia has a low boiling temperature at -33 degrees celsius and is lighter than air. It is easily recognizable, thanks to its sharp, pungent odor, which is similar to urine, cleaning products (as many such products contain ammonia in very small amounts) or sometimes human sweat.

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