This lab activity combines in-class problem-solving with lab work. Determining the Formula of a Hydrate. Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. Its formula is CuSO4 5H2O. x H 2 O, will be studied. They are known as “hydrated salts”, or simply, hydrates. Purpose: The purpose of this lab is to ensure that the student understands the procedure of heating to constant mass and to determine from experimental data the number of moles of water released by a hydrate and infer the chemical formula of the hydrate. Here we are in the lab after dehydrating some iron (III) chloride salts. View Lab Report-Determinining Formula of Hydrate.201930 (5).docx from CHEM 1411 at Collin College. 1. Overview. Pour the … Experimental Question: How can we experimentally determine the formula of an unknown hydrate, A? We were trying to determine the mass of the hydrate, anhydrous salt, and water, as well as the empirical formulas for Copper (II) Sulfate (CuSO4). Chemistry I—Lab: Determining the Chemical Formula of a Hydrate. Using crucible tongs, clean a porcelain crucible and its cover using concentrated nitric acid (6 M). The actual hydrate formula for the copper (II) sulfate compound was CuSO4+5H2O. Kimberly Graziano & Hyunjae Kim. Determine the percent of water in the hydrate: _____ (Hint: Use percent compositon formula in Table T of reference table): 3. Determine the number of moles of H20 in the hydrate: _____ (Hint: First determine GFM then use mole calculation in Table T of reference table) 4. 2 Determining the formula of a hydrate lab. Now it's time for data analysis. The lab work has two objectives: first, confirm the formula of a hydrate with known formula and second, find the formula of a hydrate in which the salt formula is known but not the molar amount of water. Effect : this will cause decreased number of moles of water, thereby decreaing the water of crystallization present in the formula. Many compounds exist as hydrates. 14457-55-7. These compounds are called hydrates. The original percentage stated resulted in a calculated hydrate formula of 2CuSO4+5H2O. The class average for the percentage of water in the hydrated copper (II) sulfate compound was 28.79%. Part D: Determination of the formula of a hydrate. Name: _ Patel Maitrykumari Determining Chemical Formula of Hydrate Pre-Lab Questions: 1.What is the A wide variety of hydrate formula options are available to you, such as sulphate, sulfide, and chemical auxiliary agent. Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. The ratio of water molecules to the anhydrous salt is constant. The five in front of the water formula show that 5 water molecules (or 5 moles of water per mole of CuSO4) are present per unit of the CuSO4 formula. Purpose. Tetraamminecopper(II) Sulfate Monohydrate Cu(NH3)4SO4 • H2O bulk & research qty manufacturer. Determine the mass of Water in the hydrate: _____ 2. In this section we will determine the number of moles of water present per mole of anhydrous solid in a given hydrate. Hydrate Lab. Their formulas are written in two We want to determine the formula for a hydrate of iron (III) chloride, FeCl 3 nH 2 O. A hydrate is an ionic compound that has a definite amount of water molecules attached to its crystalline structure. TIP: Click this link to fix system errors and boost system speed Copper (II) sulfate pentahydrate is an example of such a hydrate. 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