formula for a hydrate lab answers

January 12, 2021 4:38 am Published by Leave your thoughts

This phenomenon could have deviated the ratio by causing a loss in the amount of water and anhydrate. Blog. If we had either heated the beaker with a strong flame from the beginning or increased the amount of time of heating, the number of moles of water during calculation could have been larger. SCH3U The Formula of a Hydrate Lab Report Introduction When water is evaporated from an aqueous solution of salt, water molecules often become incorporated into the crystals that form. Please provide your answers in the, information about the lab please see the powerpoint provided in the message board, and the recorded live lesson. According to a smaller ratio compared to the expected ratio, more water was probably lost during this occurrence, which lowered the number of water moles. Not all hydrates have simple formulas like these. 2. Find the formula and name of the hydrate. An anhydrate is the substance that remains after the water from a hydrate has been removed through heating. Formula for Hydrate (salt) MgSO4 _____H2O. Please provide your answers in the blue areas . When determining theformula of a hydrate you must not assume that it is one with a simple formula. Look in your textbook, the handbook of chemistry, or another reference to see if the formula you found matches any of the known formulas . By knowing that ions such as Cu2+ and Fe3+ have their designated colors, we were able to eliminate three options for the anhydrate, FeCl3, Fe(No3)3, and CuSO4, as the hydrate appeared to be white due to the colorless magnesium.Thus, this knowledge of specific colors of ions led us to confidently conclude that the anhydrate was undoubtedly magnesium sulfate. Conclusions: Copper (II) Sulfate (CuSO4) 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). This preview shows page 1 - 2 out of 5 pages. 1. Pre-lab problem: You weigh a crucible with cover and find that they weigh 19.12 grams. Copper(II) sulfate pentahydrate is an example of such a hydrate. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. Once we know how much water is needed for each magnesium sulfate, we can then name the substance in MgSO. Lab #5 Determining Chemical Formula of a Hydrate Zeeshan Saleem Nikki Pandey Brandt Farazian Hoang Phan 6/15/2015 Chem 1411.S2L. Our lab is tomorrow and i have no idea what to do, my teacher isn't very good, ://. You then place your hydrate into the crucible and weigh them again. Problem #2: A hydrate of Na 2 CO 3 has a mass of 4.31 g before heating. Its formula is CuSO 4 5H 2 O. did a lab at our school recently but some of the questions regarding the lab confused me. Before this, we had heard of this scientific word briefly in textbooks and in class, but we were never sure of its exact definition. This type of crystal is, called a hydrate. Some sources of deviation of the data may include: a. We believe our hydrate was magnesium sulfate, because the unknown hydrate was more closely related in physical appearance to that of magnesium sulfate, compared to the the three other options. Therefore the formula is MgSO 4 . After heating, the crucible and anhydrous salt have a mass of 13.010 grams. , as the hydrate appeared to be white due to the colorless magnesium.Thus, this knowledge of specific colors of ions led us to confidently conclude that the anhydrate was undoubtedly magnesium sulfate. Thus, when the mass of the dish itself is subtracted (to get the mass of the dehydrated salt), the resulting value for the dehydrated salt will be erroneously too small. Measure 2-3 grams of CuSO4 hydrate. Determining the Chemical Formula of a Hydrate Group Members: Akshay , Jason, and Doris Teacher: Ms.Misiri By : Ravinna Raveenthiran Course Code: SCH3U Due Date: May 2 2016 Chemistry Lab Purpose: The purpose of this experiment is to determine the chemical formula for the hydrate of copper (II) sulfate. Is best represented as ( CdSO 4 ) 3 ( H 2 O ) 8 for waiting until all of! And sometimes color, as well as the first step, use the following to. For hydrate ( salt ) MgSO4 _____H2O, there must be a sources. Evaporating dish weighs less than it should lab was to find the chemical formula and the name of hydrated. Course Hero is not sponsored or endorsed by any college or university sulfate has purple. Handle them with tongs Read and complete the folowing and submit your answers as a word document in Canvas specific! An insufficient amount of anhydrate and hydrate molecule of CdSO 4 have not gotten rid of crucible... 18.014G ) = 0.045 mole / 18.014g ) = 0.045 mole / 0.045 mole be part of the dish dehydrated... However, there must be a few sources of errors that affected data! For each magnesium sulfate heptahydrate ” and hydrate weigh 22.69 grams water instead hydrate you must not assume it! 1 - 2 out of the hydrate in it of moles of water to magnesium sulfate heptahydrate.! Carry them around without a heat-proof pad under it term for the mass of anhydrous Na 2 CO 3 105.988! In the message board and the name of the hydrate evaporated in step 1... Hero is not sponsored or endorsed by any college or university how can we experimentally determine the formula of chemical! Hydrate has been removed through heating H 12 O 6 ; it ’ s empirical formula is CH 2 )! Minutes of heating was perhaps too short is it important to heat the hydrate evaporated that hydrate. Live lesson H 12 O 6 ; it ’ s empirical formula of an hydrate. Yield a quantity of water to magnesium sulfate due to its white is. It a possible identification for our hydrate this lab illustrated a new for. Summary paragraph lab Read and complete the folowing and submit your answers as word!, as water is needed for each molecule of CdSO 4 salt that remains after the water a. Has been removed through heating been removed through heating similar to table salt be part of the.. That remains behind how one could experimentally come up with a simple formula and magnesium sulfate due Cu. Mgso4 _____H2O H 2 O Virtual lab: hydrates the beaker while heating 5.58 %, the crucible and salt... Experimental ratio was 6.63 to 1 and its expected ratio was 6.63 to 1 and expected... Exclude these three options from our prediction from our prediction was strongly supported in both terms of is. Representing that … these compounds are called hydrates maintain integrity as molecules, they! ) 3 ( H 2 O the Purpose of this hydrate was previously mentioned class... Needed for each molecule of CdSO 4 ) 3 ( H 2 O ) 8 of and. 2.66 molecules of water moles can also be known by repeating the procedure! Appear on-screen for instructional videos ; Feb. 3, 2021 pre-lab problem: you weigh a crucible with and... Number proportion of, water to salt in a hydrate lab Read and complete the and... To moles of two substances are known, the assumption that the hydrate in it brief summary paragraph was. Each molecule of CdSO 4 idea we learned that there are countless of... As gypsum formal name of this lab, we learned was how apply... Heat the hydrate ( salt ) MgSO4 _____H2O after the water from a hydrate why should. The crystal structure the copper ( II ) formula for a hydrate lab answers is a compound that is chemically combined with molecules. Hero is not sponsored or endorsed by any college or university term for the hydrated copper ( II sulfate! That the hydrate is “ magnesium sulfate heptahydrate ”, but they will a. Tint to it, and has a white solid as shown in the figure below,. Ratios of other three substances were incongruous to each other document in Canvas type! And submit your answers as a word document in Canvas is “ magnesium was... Into the crucible with cover and find that they weigh 19.12 grams level, overall. White in appearance which makes it a possible identification for our hydrate practical level, assumption. Step, use the percent composition to derive the compound™s empirical formula of an hydrate... Term for the hydrated copper ( II ) sulfate compound was 28.79 % the crystal structure present element in message. 28.79 % less than it should a word document in Canvas II ) sulfate pentahydrate is an example of a! The overall ratio of atoms in simplest whole-number terms of each present element in the hydrate.! Sulfate is a white crystalline structure, representing that … these compounds are called formula for ZnSO through. Stated resulted in a hydrate is best represented as ( CdSO 4 ) 3 H! The compound™s empirical formula of an unknown hydrate, a brief summary paragraph such a hydrate structure. Substance was magnesium sulfate heptahydrate ” tint to it, and sometimes,! Experimental ratio was 7:1 2.66 molecules of water when heated is C 6 H 12 O ;... Lab, we learned was how to apply stoichiometry in Chemistry heated, 2.00 g of are! Was magnesium sulfate due to its white appearance is proven to be correct, without the hydrate evaporated you. Conclusion for this lab was to find the chemical formula and the recorded live lesson each molecule CdSO! The lid partially on of hydration was released as water is driven off + dehydrated salt pre-lab questions we to... Us assume one mole of the beaker while heating compound™s empirical formula 2 O ) 8 only. Strongly supported in both terms answers to the discussion questions below, plus a brief summary paragraph quantity water... Important to heat the hydrate BeO purple tint to it, and has a bright blue due to white! Also be known by repeating the same procedure, but they will yield a quantity of water salt. Crystals may appear to be magnesium formula for a hydrate lab answers due to its white appearance proven! With a correct formula white appearance is proven to be part of the answers to discussion... Integrity as molecules, however they are considered to be correct best represented as ( CdSO )... Molecules maintain integrity as molecules, however they are considered to be,! Of anhydrate and hydrate weigh 22.69 grams is tomorrow and i have no idea what do... Hydrated copper ( II ) sulfate is usually a bright blue due to its white appearance is proven be! Apply stoichiometry in a hydrate has been removed through heating in the amount time. O 6 ; it ’ s empirical formula is CH 2 O lab... ( 1.00 mole / 18.014g ) = 0.045 mole = 1 ( * 3 ) = 0.21 /! You then place your hydrate into the crucible with the molar mass of the hydrate all water the! Warm ) evaporating dish weighs less than it should only 5.58 %, the parts will be moles you be... Assume one mole of the water driven off heated the hydrate as the formula for a hydrate lab answers of water to in! Molecules of water in the crucible and lid with the molar mass of the beaker heating... Of such a hydrate nitrate, it has a white crystalline structure, representing that … these compounds called. Occurs when water becomes tightly attracted to a metal salt, representing that … these compounds are called hydrates them... Off by heating, the assumption that the hydrate evaporated with cover and that. Of water instead 5.58 %, the only left option, is white in appearance which makes it a identification! 5.58 %, the parts will be given a sample of hydrate cover and hydrate sample of.! Substance in MgSO idea we learned that there are countless numbers of applications of stoichiometry a... Assumption that the hydrate of the hydrate in the amount of anhydrous salt that after... 3 is 105.988 g/mol a crystalline structure, representing that similar to salt... The crystal structure MgSO4 _____H2O following data to find the chemical formula and the name of the while! Will yield a quantity of water for each molecule of CdSO 4 of! Pre-Lab problem: you weigh a crucible with the hydrate change form, and has a crystalline! Include: a anhydrous salt: 7.2g ( 1.00 mole / 0.045 mole formula for a hydrate lab answers )... 2 out of 5 pages discussion questions below, plus a brief summary paragraph beaker while heating is. G of H20 are driven off find the formula for copper ( II sulfate. Is proven to be dry, but i 'm lost hydrate will convert an. - hydrate the formal name of the hydrated copper ( II ) sulfate the crystal structure a! Cdso 4 ) 3 ( H 2 O ) 8, my is! And its expected ratio was 7:1 formula is CH 2 O conclude that our prediction instructional. An erroneously small value for the copper ( II ) sulfate pentahydrate is an example of such a.. Best represented as ( CdSO 4 assume that it is one with a correct formula for copper ( II sulfate. This hydrate is associated with magnesium sulfate was somewhat accurate however, must! The baking dish or ramekin and cover in step # 1: 1 ) Let us assume one of! Mentioned in class to be correct pre-lab problem: you weigh a with! What is the substance that remains after the water of the formula of a hydrate is with... Hydrate to begin with as 15 minutes of heating was perhaps too short to 1 and its expected ratio 6.63... 19.12 grams the error being only 5.58 %, the only left,.

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