Interpretation:
Water molecules associated with a formula unit of calcium chloride in CaCl2. 2H2O is to be written and the name of this compound is to be stated.
Concept introduction:
Some chemical compounds on crystallization from water solution produce crystals that contain water molecules as a part of their crystal structure. These water molecules of the crystals are called as water of crystallization or water of hydration. The crystal that results from the process of crystallization is referred as hydrate. Conversely, the water molecules can be driven away from the crystals by applying heat energy to afford anhydrous chemical compounds. The well-known example of a compound having water crystallization is CuSO4.5H2O. The anhydrous chemical compound CuSO4 (colorless) is combined with 5 H2O molecules on crystallization from a water solution result in hydrated CuSO4.5H2O (blue). The name of this chemical compound is denoted as copper (II) sulfate penta hydrate. In this case, the prefix ‘penta’ is usually referred as the presence of 5 molecules (water).
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Introductory Chemistry: An Active Learning Approach
- If “Epsom salt”, MgSO4·xH2O, is heated to 250°C, all the water of hydration is lost. On heating a 1.687 g sample of the hydrate, 0.824 g of MgSO4remains. How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the hydrate and state the complete name.arrow_forwardWhen looking at a compound's formula, they can become rather complicated. A simple compound might be CO2. The two capital letters tell us there are two elements. The carbon has no subscript directly to the right of it which means that, in this compound, there is only one carbon atom. The oxygen atom has a subscript of 2 which means that, in this compound, there are two oxygen atoms. How many atoms of sulfur are present in H2SO4?arrow_forwardStrontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many phosphorus atoms are represented in the formula for Sr3(PO4)2?arrow_forward
- Counting Atoms The formula for a compound indicates the elements that make up the compound and the number of atoms of each element present in the compound. These numbers of atoms are indicated by the use of small numbers called subscripts. Sometimes groups of atoms act as a single atom. When a subscript appears outside the parentheses, it indicates that all the elements inside the parentheses should be multiplied by that subscript. For example, the formula Fe(OH)3 indicates the combination of 1 atom of iron, Fe, 3 atoms of oxygen, O, and 3 atoms of hydrogen, H. In the following examples, list each element in the compound and the number of atoms of each element present. The first example has been done for you. You may already be familiar with some of the compounds. FIX ANY WRONG PROBLEMS! **Use the periodic table link to help you identify the elements used NAME USE FORMULA ATOMS IN FORMULA Calcium Carbonate Limestone CaCO3 Ca=1 calcium C = 1…arrow_forwardWrite the formula for the polyatomic ion in NH4Cl expressed as an ionarrow_forwardHexane is C6H14. What is the formula for the alkane with 3 more carbons?arrow_forward
- Complete the following table. Name of the SALT Formula of the SALT Formula of the aqueous ACID from which the salt is derived Name of the ACID Formula of the BASE from which the salt is derived Name of the BASE MgS H2S magnesium hydroxide NH4IO3 iodic acid barium nitrite HNO2 barium hydroxide Sn(BrO)4 hypobromous acid stannic hydroxide Li3PO4 H3PO4 LiOHarrow_forward1) Pretend there is a new metal wagium with the symbol Wg, and it is a variable charge metal. It makes the compound WgN. What is the name of this compound? What type of compound is this? What is the charge on the metal? 2) Pretend there is a new metal Purrium with the symbol Pi, and it is a fixed charge metal. It makes the compound Pi(SO4)2. What is the name of this compound? What type of compound is this? What is the charge on the metal? How are the nomenclature rules different for these two compounds?arrow_forwardCobalt, a transition metal, forms both the Co2+and Co3+ions. Write the correct formulas and give the name for the oxides formed by the two different ions.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning