Its formula is kal(so4)2(12h2o and its name is potassium aluminum sulfate dodecahydrate alum is commonly used as a binding agent for dyes aluminum is considered a reactive metal, but because its surface is usually protected by a thin film of aluminum oxide, it reacts only slowly with acids. In experiment 15a, you prepared alum crystals, kal(so 4) 2 • 12h 2 o in experiment 15b, you will conduct two of tests to determine if your crystals are really alum the first test is to find the melting temperature of the compound and compare this value with the accepted (published) value for alum. The synthesis and determination of empirical formula for magnesium oxide essay sample the importance of family relationships in arthur miller’s play ‘death of a salesman’ alum: analysis that confirms whether its a compound essay sample.
3 other tests could be made to verify the compositions of alum for example, we can use the percentage of the sulfate in the alum and use it to find its mole ratio and figure out how much water is in the synthesized alum conclusions: to conclude, the precipitate that came out in as a result were alum crystals according to many tests we took. Analysis of alum, alk(so 4) 2 when a compound is synthesized, tests are carried out to confirm whether the compound formed is indeed the compound desired there are a number of tests that can be performed to verify the analysis of silver in an alloy author: default.
Ap chemistry lab 2: analysis of alum lab objective: in this lab we will analyze alum by two techniques in order to verify its identity the melting point and the mole ratio of hydrated water to anhydrous aluminum potassium sulfate will be determined lab procedure: 1 use a mortar and pestle to crush alum 2. Alum: analysis that confirms whether its a compound essay sample the purpose of the experiment is to confirm whether the compound is alum introduction.
The intent of the experiment is to corroborate whether the compound is alum introduction percentage composing is defined as portion divided by whole multiplied by 100.
Analysis of alum kal (so4)2 12h2o laayla muhammad 10/31/06 -11/01/06 purpose: to do several tests to determine if the resulting crystals are really alum, to use a thiele melting point tube to determine the melting point of synthesized sample of alum and to determine the amount of water in a synthesized sample of alum and also the percent sulfate in a synthesized sample of alum.
In this laboratory exercise we will analyze the common alum, or potassium aluminum sulfate dodecahydrate (kal(so 4) 2•12h 2 o), we produced during last week’s laboratory exercise to confirm the chemical and physical properties of the substance are consistent with those of known samples of alum. In this experiment it was concluded that yes the substance was alum there were two rials and both had the same decision post-lab inquiries 1 they must be cool before you can weigh them 2 the features were similar hence it had to be alum 3 other trials like utilizing a fire decision in this experiment we confirmed that the compound is alum.