Using your answers in , in question 2, what is the empirical formula fo zinc iodide from this experimental data 4 using the empirical formula, in question 3, balance the following equation. Consumed this will be the strategy you use in this lab when you determine the empirical formula of zinc iodide specifically, you will react roughly equivalent. Iodide is an ion of iodine with a negative one charge the molecular formula for the iodide ion is: i - however, as with all ions, it can not exist on its own. The empirical formula for zinc iodide is zni2 this shows that for every zn atom in the reaction, there is one diatomic iodine molecule graphs 4 and 5 support this formula as they suggest that zinc iodide is composed of about 79% iodine and 27% zinc.
The empirical formula of a compound gives the lowest whole-number ratio of the constituent atoms that is consistent with the mass ratios measured by experiment. The empirical formula for zinc iodide is the same as the molecular formula 4 the balanced chemical equation consists of stoichiometric factors which relate the number of moles of each species, not the mass ratios. Start studying lab #6: determination of the empirical formula of zinc iodide learn vocabulary, terms, and more with flashcards, games, and other study tools. In this exercise we will synthesize the compound zinc iodide from the elemental substances zinc and iodine our eventual purpose will be to determine the chemical formula of this compound.
What is the formula for calcium chloride and sodium hydroxide what is the use of zinc chloride what is produced when sodium hydroxide reacts with calcium chloride. General chemistry laboratory experiments, suzanne w slayden, 1999, 3rd edition, pages 31-35 purpose: the purpose of this experiment is to determine the empirical formula of the binary compound, zinc iodide. Calculate the molar mass of zinc iodide in grams per mole or search for a chemical formula or substance. Based on your data, what is the empirical formula of zinc iodide [hint: what is the simple, whole number mole:mole ratio of zinc to iodide] 4 use cation and. The synthesis and characterization of zinc iodide to find the empirical formula, a ratio of numbers of atoms (or moles) is needed.
Empirical formula of zinc iodide produced after our class discussion on friday, when i will tell you the actual formula, complete these calculations as well. Empirical formula: this formula tells about the ratio of the elements present in a compound this formula is usually obtained based on the analysis of experimental data. Empirical formula of tungsten iodide the tungsten iodide formed showed that is contain 42% by mass tungsten what is the eqirical formula of empircal formual of tungsten iodide. Copper iodide dimethyl sulfide complex empirical formula (hill notation): c 8 h 9 bo 4 molecular weight: 17997 cas number: 99768-12-4 594539.
Determination of empirical formulas in this lab you will synthesize zinc iodide from zinc metal and solid iodine you will also determine the formula of an unknown. Experiment 9 empirical formula of zinc iodide objectives upon completion of this experiment, students should have learned: 1 the law of conservation of mass. Then determine the empirical formula of the reaction product from your result, write a balanced equation that describes the chemical reaction that takes place between zinc and iodine finally, add the mass of the unreacted zinc to the mass of product to determine the percent of the total mass that is recovered by your procedure. Two reactants combine to form a single product, zinc iodide (see equation 1) zn( s ) + i 2 ( s ) j zni 2 ( s ) equation 1 elemental zinc, which has a melting point of 420 o c, is a typical metal.
Using the reaction between zinc and hydrochloric acid to determine the empirical formula of zinc chloride determining the empirical formula of zinc iodide determining empirical and. Therefore the empirical formula of the zinc iodide formed in this reaction is: conclusion in conclusion decantation the mass of the products (4056 g by subtracting the reacted zinc (0pham 4 the approximate mass by difference of zinc was found to be 1.
Preparation and percent composition of a metal oxide and iodide: determination of the empirical formula of a compound part b: determination of the empirical formula of a metal iodide (zinc reaction only. At 1150°c, zinc iodide vapor dissociates into zinc and iodinethe true value of the empirical formula of zinc iodide is zni 2 » request a quote page: 1. Synthesis and decomposition of zinc iodide partners: sonya pasia and kristen kobayashi the empirical formula of the recorded data was determined by calculating.