Determination of water hardness using a titrator hands-on labs, inc version 42-0152-00-02 lab report assistant this document is not meant to be a substitute for a formal laboratory report. Determination of water hardness by: diane krehbiel abstract: in this experiment, the hardness of an unknown water sample will be determined the calcium in the water will be measured by performing a titration with edta eriochrome black t will be used as an indicator.
Lab 7 analysis of hard water prelab assignment before coming to lab: use the handout lab notebook policy as a guide to complete the following sections of your report for this lab exercise before attending lab: title and date of lab, introduction, materials/methods and data tables. In this experiment we will take a water sample from our local water (distilled of course) and combine the ca and mg ions in the water sample and simply report our results in terms of ca also, water chemistry in the water treatment industry would report water hardness as mg/l caco3 not merely as mg of ca per liter.
Research and analysis report on the determination of water hardness in this experiment, the hardness of an unknown water sample will be determined it was difficult in this lab to tell exactly when the endpoint occurred because the color changed to violet before blue it was hard to distinguish between these colors sometimes. An introductory lab for chem 11 students determine the mass, volume (and density) of a small pellet of cross-linked polyacrylamide (also known as superabsorbent polyacrylamide or “water gel crystals” from educational innovations) before and after the pellet swells hundreds of times larger in water. Lab #11: determination of waters of hydration 11 april 2016 chemistry 111 lab section 004 mohammad jairul islam abstract: this preview has intentionally blurred sections. Determination of the hardness of water one of the factors that establishes the quality of a water supply is its degree of hardness hardness is defined as calcium and magnesium ion content since most analyses do not in the laboratory, we will calculate the class average of the water hardness (ppm) and.
Since chemistry is an exact science, the massing of substances which enter or result from a chemical change must be done with the best possible accuracy. Lab 11 - chemical kinetics all of the solutions can be flushed down the sink with plenty of water prior to class please read the following sections of lab safety and practices: table b: calculations for determination of rate law question 4: inspect the data in data table b what is the order of the reaction with respect to iodide ions. Lab 7 analysis of hard water prelab assignment chemistry 161lab- k marr green river community college lab 7 - page 2 11 repeat steps 3-7 using the sample of water from your home if time permits and if you have sufficient. Determination of water hardness print reference this published: 23rd march, 2015 using the scale in the lab manual, 9842ppm corresponds to moderately soft water this experiment shows a practical application of how chemistry can be used to help deal with real world issues testing water with chemical methods to determine hardness.
Lab 7: determination of water hardness using a titrator name: kyndal petrie lab partners: none date of experiment: july 19, 2013 location: my house course number: che112 abstract: this experiment was to determine the hardness of the local water supply. Department of chemistry general chemistry 101 laboratory manual an inquiry approach through an environmental awareness the following laboratories have been compiled and adapted by alan khuu, ms & armando rivera, phd. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor exercise 1: determination of water hardness data table 1 edta titration volume.
Lab 11 chemistry determination of water hardness experiment:11-20-13 date submitted: 11-23-13 determination of water hardness using a titrator purpose: this purpose of this experiment was to determine the hardness of the local water supply be familiar with using a titrator to tell wether your water is hard or soft. One of the most important operations in a chemistry laboratory is the massing of objects since chemistry is an exact science, the massing of substances which. Determination of water hardness in this experiment the indicator eriochrome black t (ebt) is used to signal the presence of ions in the water sample.