Hydrogen ion

Discussion There were four goals for Project 11: Identification, Properties, and Synthesis of an Unknown Ionic Compound. The first goal was to identify the unknown compound, the second goal was to determine the reactivity of the compound, the third goal was to determine the quantitative solubility of the compound in water, and the fourth goal was to find the percent yield of a product from a reaction involving the unknown compound. Determining the identity of the unknown compound was achieved…

CH 204- Introduction to Chemical Practices Experiment 1- Qualitative Analysis of Cations Sharon Alexander Kathrynn Labat TA: Yu-Chun Lin September 25, 2017 Results & Discussion This experiment was composed of three parts. In the first part, qualitative methods were used to identify the unknown cation in an aqueous solution. The cation was to be either lead or silver. If silver was present, extra steps were needed to be taken in order to confirm its presence in the…

Which one of the fo llowing is often easily separated into its components by simple techniques such l) as filtering or decanting? A) homogeneous mixture B) solutions 0 heterogeneous mixture D) elements E) compounds 2) An clement cannot 2) A) be part of a heterogeneous mixture Ji,) be a pure substance is corrccl for ___ _ 19) A) elements B) homogeneous mixtures Ohcterogeneous mixtures D) compounds 20) Which of the fo llowing is an example of a lieterogeneous mixture? @ oil and vinegar B) 70%…

order to know more about nitrate, we actually must understand what a polyatomic ion is. A polyatomic is an ion which consist of molecules, thus, it may also be referred as a molecular ion. Two or more atoms covalently bond or share electron pairs with each other to make up a polyatomic ion. Once they have bonded, they become considered as a whole single ion. Moreover, it is known to have a charge, most polyatomic ions have a negative charge but there is an exception with a positive charge. In…

dialysis tubes were taken out from the graduated cylinder. The solutions inside of graduated cylinder were used to perform Benedict’s test, IKI test, and biuret test. For the solutions that had NaCl, and MgCl2 dialysis tubes were used chloride ions and magnesium ions methods to detect. In this experiment, the independent variable was the different amount of solutions; the dependent variable was whether or not these solutions would pass through. The controlled variables were the same amount of…

Physical properties of PHB: PHB physical properties similar to polypropylene. However, PHB is perfectly isotactic and does not include any chain branching like, for instance, PE. During processing, it flows easily. It is insoluble in water and soluble in chloroform and other chlorinated hydrocarbons. It exhibits good barrier properties against oxygen and compared to other biopolymers. It possesses better physical properties than polypropylene for food packaging applications. (Chaijamrus & Udpuay…

added to the precipitate, forming a solution possibly containing lead (II) ions. A lack of precipitate formed denied the presence of silver ions. Then, K2CrO4 was added to the solution, forming a yellow precipitate to confirm the presence of Pb2+ ions in Unknown #112.…

Purpose: The purpose of this experiment was to determine the percent of chlorine in an unknown soluble salt through using gravimetric techniques. The unknown salt was dissolved in water and the chloride ions were precipitated using silver nitrate which produced silver chloride. The silver chloride was then separated by filtration techniques and through this the amount of chlorine in the original salt was able to be calculated. It is expected that the chlorine percent will be around 55.95%…

Experiment 3 titled “Physiologically Important IONS” and the purpose of this lab is to become familiar with metal and nonmetal ions and mostly important in biological and physiological processes. Also, to become familiar with tests to determine the presence or absence of ions as well as to estimate approximate amount. To begin, when a solution is tested, make sure you observe everything and note everything. This is lab, we will test some positive ion and determines if it’s an anion or a cation.…

It was determined that Substance A is a covalent molecular substance as it is a liquid at room temperature and therefore has a low melting point which is a property of a covalent molecular substance. Substance B was found to be a metallic substance as it demonstrated properties such as high melting point, conductivity as a solid etc. Substance C was found to be a covalent network structure as it did not conduct and was very hard and had a high melting point. Both Substances D and E were very…