Unknown hydrate lab - free download as word doc (doc), pdf file (pdf), text file ryan thomas chemistry honors period 1 5/6/07 determining the formula of a hydrate purpose to determine the formula of a hydrate experiment 4 hydrated salt formula lab determining the chemical formula of a. Papers - investigation to identify the formula of hydrated copper sulphate investigation to identify the formula of hydrated copper sulphate when a salt is dissolved in water. This video demonstrates finding the formula of a hydrate salt visit for more. Start studying chem lab: determining the percent water in an unknown hydrate learn vocabulary, terms connected to the rest of the formula with a raised dot formula for copper (ii) sulfate determine the mass of a hydrated salt sample and the mass of the residue after heating the.
What is the empirical formula of a hydrated salt introduction: after determining the ratio, write the formula as in the example above and then determine the name of your salt the iupac prefixes used to write formulas are. Methanol is often sold as methyl hydrate, implying the incorrect formula ch 3 oh 2, while the correct formula is ch 3 -oh inorganic chemistry where n is the number of water molecules per formula unit of the salt, is commonly used to show that a salt is hydrated. Determining the empirical formula of a hydrated compound introduction the empirical formula of a compound is defined as the simplest whole number ratio of the. Laboratory exercise: the chemical formula of a hydrate in this laboratory exercise we will determine the relative amount of water in a hydrated we will determine the number of water molecules per formula unit of epsom salt a hydrate of magnesium sulfate: mgso 4 xh 2.
144 water of crystallisation in a crystallised salt example 1441: calculate the % of water in hydrated magnesium sulphate mgso 47h 2 o salt crystals. Ions the water will be removed by heating hydrated salts quickly lose their waters of hydration transfer the copper chloride salt to a 100 ml beaker and dissolve the salt in 50 ml of determining chemical formula: from your mass measurements determine the mass percent of cu. Properties of hydrates objectives identification of hydrates in a group of compounds investigation of the properties of hydrates (the formula of the anhydrous solid will be provided), the number of moles of water and moles of. Virtual lab: hydrates background: hydrates are ionic compounds in the formula, the unit formula for the salt appears first we can find the percent of water in a hydrate experimentally by accurately determining the mass of the hydrate and the mass of the anhydrous salt.
Determine the formula of a hydrate five examples go to hydrate problems #1 - 10 go to hydrate problems #11 - 20 mass of hydrated salt minus mass of anhydrous salt = mass of water 320 g - 1187 g = 2013 g h 2 o 6) convert to moles of water. Determining the formula of a hydrate a hydrate is an ionic compound that has a definite amount of water molecules attached to its crystalline structure in a hydrate's formula, the formula for the salt is followed by a raised dot. In most cases, heating can eliminate the water in a hydrated molecule since ionic compounds have a high melting point helpful information: hydrates have a formula of salt n h2o name: determining the formula of a hydrate honors chemistry hydrated crystal lab directions elizabeth laba. Notice the formula for the salt is followed by a raised dot, then a coefficient stating the number of water molecules, and then the formula for water determine the formula of a hydrate 4 determine the mass percentage of water in a hydrate. 1 calculate the gram formula mass of the salt and the water separately hint: it is helpful to remember that the gram formula mass of water is 180 grams/mole.
B determining the chemical formula of an hydrate 1 clean and fire a crucible from chem calculations and results a determining the empirical formula of a binary compound calculate the mass of the metal and the mass of the product by determine the formula of the hydrated salt.
Determining the formula of an unknown hydrate knowing the mass of water in your hydrate will let you calculate the salt is the formula of your anhydrous salt you do this by dividing. Introduction salts are substances that have the property of readily allowing water molecules to attach themselves to its crystalline structure the water molecules that combine with the salt can result from exposure to humid conditions when a substance becomes saturated with water, it is said. To determine the empirical formula of the given hydrate the salt and the formula of water an example of a hydrate formula is cuso 4 5 h 2o , copper (ii) sulfate pentahydrate formula of hydrate = _____ (given by. Chemical formula detective: determining the empirical formula of a hydrate epsom salt (mgso4 7h2o) is a heptahydrate of magnesium sulfate: the hydrated crystals change color and will look like tobacco when dehydrated. Iron (iii) phosphate (hydrated sample) was heated to a constant mass determine the formula of the hydrated salt from this information 1245 g crucible mass 1621g crucible + hydrated salt mass 1522g crucible + anhydrous salt mass thanks so much i don't know what to do :x.
After heating, the mass of the system was found to be 13650g calculate the formula of the hydrated salt that was formed the molecular weight of the anhydrous salt how do i find the formula fo this hydrated salt the mass of the crucible. The determination of a chemical formula lab report steps 1-3: set up 1 obtain and wear goggles 2 measure and record the mass of a clean, dry crucible without cover mass of hydrated sample (g) 102 mass of crucible and dehydrated sample (g) 1428 mass of dehydrated. Formula of a hydrate - by jen-chou wang & tandy grubbs , you will be determining the empirical formula of a copper chloride hydrate by closely inspecting mass measurements that have been recorded before and after a series of chemical green hydrated copper chloride.