Reagent

preparation of Grignard reagents typically involves the reaction of an alkyl halide or aryl halide with magnesium metal in an anhydrous ethereal solvent. This reaction results in the formation of a carbon-magnesium complex within an alkyl magnesium halide or aryl magnesium halide. Grignard reagents are considered to be strong nucleophiles and strong bases that have the ability to react with acidic proton sources and carbonyl functional groups. The preparation of Grignard reagents must be conducted in

reactants are known or vice versa. Most calculations in chemistry use this in some way (Graves, 2013). Along with stoichiometry, dimensional analysis can also be used, and through the use of both one can calculate the moles of a substance, limiting reagents of a reaction- the substances that limit a reaction’s potential yield, substances that are in excess, number of atoms of a substance, analysis of a combustion reaction,and the molarity of a solution (Burdge and Overby, 2012). Compounds, when

Observing a Limiting Reactant An experiment was carried out to predict the limiting reactant in a chemical reaction between Magnesium and Hydrochloric acid, using the mole concept. Limiting Reactant: It is the reactant that will deplete or will be used up first during a chemical reaction. Limiting reactant also determine how long the reaction will last for. Balanced Equation: Mg + 2HCl = MgCl2 + H2 The balanced equation is needed to determine the mole ratio between the two reactants. From

If the degree of unsaturation = 2, there are a few possibilities i.e. (i) presence of one triple bond, (ii) two rings, (iii) two double bonds or (iv) one ring and one double bond. If the degree of unsaturation = 3, various combinations involving rings and / or double bonds are possible. If the degree of unsaturation = 4, it could indicate the presence of a benzene ring. If the degree of unsaturation > 4, it could indicate the presence of a benzene ring and a ring / double bond. (Consider also

In order to calculate the percent yield, we first had to determine the moles of the limiting reactant, which was anthranilic acid in this case, by dividing the mass of was anthranilic acid we weighted in the beginning of the lab (2.001g) and dividing it with the molar mass of was anthranilic acid. Thus obtaining the value of 0.01456g. Then in order to calculate the theoretical yield, we multiplied the moles of was anthranilic acid with the molar mass of N-acetylanthranilic acid and the mole ration

Table 1 shows the steps and color results after each reagent was added to bacterial smear slide. Before any reagent was added to the heat fixed bacterial slides unknown bacteria was colorless. The primary stains reagent, Crystal Violet was added to the slide the unknown bacteria color was purple. Then, Iodine mordant the color of cells still remained purple. After adding the decolorizer alcohol gram + would remain purple and the purple color from the gram- would be removed and it would become colorless

The Effect of Changing the Concentration of the Limiting Reagent Calcium Chloride Aqueous (g mL-1) Added to Sodium Carbonate Aqueous on the Percent Yield of the Precipitate Formed in Calcium Carbonate and Sodium Chloride, While the Room Temperature (23℃) and Drying Time (23h) is Kept Constant. Geetu Lalchandani Mr. Yhard SCH 3UB-01 November 16th 2014 Table of Contents 1.0 Research Question…………………………………………………………………….3 1.1 Introduction…………………………………………………………………………...3 1.2 Hypothesis………………………………………………

their reactions with chemical reagents. The purpose of this lab was to sharpen our powers of observations and deduce from observed reaction to identify household chemicals. The investigation allowed us to make comparisons of reactions and pattern recognitions. The four household chemicals used in the experiment are Lysol Toilet Bowl Cleaner, baking soda (Arm & Hammer), Vanish Crystal Bowl Cleaner, and Clorox Liquid Bleach. These chemicals were reacted with five reagents including blue food color, 0

664g In Experiment B the limiting reactant was determined to be CaCl2 when two drops of the test reagent 0.5 M CaCl2 was added to the supernatant liquid in test tube 1, and a precipitate formed. Since there was a reaction, there was C2O42- in excess and Ca2+ is the limiting reactant in the original salt mixture present in test tube 1 . This was further confirmed when two drops of the test reagent .05M K2C2O4 was added to the supernatant liquid in test tube 2. There was no precipitate because

A. CuSO4 + Fe Cu + FeSO4 B. 3CuSO4 + 2Fe 3Cu + Fe(SO4)3 2. If Iron (III) Sulfate were formed, what mass of Copper would be expected and what is the limiting reagent? C. 2.26 g Cu D. Fe 3. If Iron (II) Sulfate were formed, what mass of Copper would be expected and what is the limiting reagent? E. 2.8 g Cu F. CuSO4 Driving Question: What compound is formed when you add 7 g of CuSO4 to 2 g of Fe? Goal: To correctly identify what compound is formed