P4s2
DERIVING ACID'S NAME FROM FORMULAIn order to name an acid when given the formula, follow these steps:1. Identify the anion. This can be done by removing or separating the hydrogen(s) from the anion via writing out the equation. The number of hydrogens is = to the anion's charge.HX --> H+ + XORH+ + Anion (Cation + Anion)2. Name the acid. It is highly recommended to remember various polyatomic ions and such for this step. Since acids are named based on the anion, follow the guidelines below:Anion ends with "-ide": place the prefix "hydro-" in front of the element name. Replace "-ide" with "-ic acid".Hydro-element name-ic acidAnion ends with "-ate": replace "-ate" with "-ic acid".Element name-ic acidAnion ends with "-ite": replace "-ide" with "-ous acid".Element name-ous acid**NOTE: If the anion involves sulfur or phosphorus, changes to the stem name will be made. Add "-ur" to the stem name if there is sulfur, or "-or" if there is phosphorus.**SulfurAnion ends with "-ide": hydro-element name-uric acidAnion ends with "-ate": element name-uric acidAnion ends with "-ite": element name-urous acidPhosphorusAnion ends with "-ide": hydro-element name-oric acidAnion ends with "-ate": element name-oric acidAnion ends with "-ite": element name-orous acidDERIVING FORMULA FROM ACID NAMEIn order to identify the formula from the acid's name, follow these steps:1. Identify the anion. This can be done by adjusting the name via removal of suffixes and prefixes (if applicable).Anion starts with "hydro-", ends with "-ic acid": drop prefix and replace "-ic acid" with "ide.Element name-ideAnion ends with "-ic acid": replace "-ic acid" with "-ate".Element name-ateAnion ends with -ous acid": replace "-ous acid" with "-ite".Element name-ite**NOTE: If there is sulfur or phosphorus in the anion, also remove the "-ur" (sulfur) or the "-or" (phosphorus) in the ending when identifying the anion.2. Identify the formula. Now that the anion has been identified, we can create the formula. Add cation H+ to the equation (the number of hydrogens is equal to the anion's charge). It is recommended to remember various polyatomic ions for this step.Cation + AnionH+ + AnionORH+ + X-n--> HX
If the compound does not contain Oxygen:hyro__(name of element)__icIf it does contain Oxygen:Ending is -ate changes to -icEnding is -ite changes to -ous
Vasile Romanciuc has written: 'Olimpul de plastic' 'Recitirea proverbelor'