record the well number and observations. 1. Sodium Bicarbonate + Hydrochloric Acid 2. Hydrochloric Acid + Bromothymol blue 3. Ammonia + 1 drop Bromothymol blue 4. Hydrochloric acid + blue dye 5. Blue dye + Sodium Hypochlorite. Observe & add 1 drop of hydrochloric acid. 6. Potassium iodide + Lead Nitrate. A precipitate should form. 7. Sodium hydroxide + phenolphthalein. a. Phenolphthalein is an acid-base indicator. 8. Hydrochloric acid + phenolphthalein. a. What color would be expected when
Premium PH indicator PH Acid
Titration Purpose/Objective: 1. To titrate a hydrochloric acid solution of unknown concentration with 0.50M sodium hydroxide‚ and determine the molarity of the hydrochloric acid 2. To titrate an acetic acid solution with 0.50M sodium hydroxide‚ and determine the molarity and percentage composition of the vinegar. Apparatus and Materials: Please refer to P.236 of Health Chemistry Laboratory Experiments. Procedure: Part I Determination of molarity of Hydrochloric Acid Solution Part II Determination of
Premium Chlorine Acetic acid Sodium chloride
fixed distance so Reaction rate = fixed amount of reaction time taken time taken From this we can see that the reaction rate is proportional to l ÷ time. THE DISAPPEARING CROSS The reaction used in this experiment is between dilute hydrochloric acid and sodium thiosulphate (formula Na2S2O3). You can see from the chemical equation below that one of the products is sulphur‚ which does not dissolve in water. [pic] As the reaction proceeds‚ a fine precipitate of sulphur forms‚ which
Premium Chemistry Chemical reaction Sulfuric acid
many other grains. The leaves of amaranth are a good source of nutrition as well‚ with high concentrations of vitamins A‚ B6‚ and C; riboflavin; and foliate. Minerals found in amaranth greens include calcium‚ iron‚ magnesium‚ phosphorous‚ potassium‚ zinc‚ copper‚ and manganese. Several studies have shown that amaranth seed or oil may benefit those with hypertension and cardiovascular disease; regular consumption reduces blood pressure and cholesterol levels‚ while improving antioxidant
Premium
created from the reaction of hydrochloric acid and aluminum fills a plastic bottle until it ruptures. Warning! The Works bomb is illegal to make! Don’t do it! The information below is purely for educational purposes (such as research papers) and may leave leaves out crucial steps Here’s how someone would make the Works bomb if it were legal: 1.) Go to a grocery store or big box store and pick up toilet cleaner containing hydrogen chloride (a.k.a. hydrochloric or muriatic acid). One brand
Premium Chlorine Hydrogen Hydrochloric acid
food from the esophagus. As food reaches the end of the esophagus‚ it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. The lining of the stomach secretes hydrochloric acids and enzymes that break down the food so that it can continue on its journey through the digestive system. As it secretes acid and enzymes‚ the stomach muscles contract in a process called peristalsis to mix the food with the acid and enzymes
Premium Stomach Digestion Digestive system
alcohol and 55% water. The rate of hydrolysis of t-butyl chloride is measured by the decrease in the concentration of this reagent with time. The rate of decomposition of t-butyl chloride must be equal to the rate of formation of hydrochloric acid. The rate of hydrochloric acid formation was measured by titrating the acid produced with a base‚ NaOH. Introduction The field of chemical kinetics studies the speed of chemical reactions and the reasons that affect the speed of a reaction. The speed
Premium Chemical reaction Chemistry Reaction rate
Magnesium Ribbon is a long strip of magnesium metal about 3 millimeters wide and 10 meters long with a thickness of about 0.03mm‚ and weight of about 25 grams. Hydrochloric acid is a solution of hydrogen chloride in water‚ that is a highly corrosive‚ strong mineral acid with many industrial uses. It is found naturally in gastric acid. Hydrochloric
Premium Magnesium Chemistry Oxide
Design Lab #17: Reaction Rate - Calcium Carbonate & Hydrochloric acid Design D: Introduction: In this experiment calcium carbonate will be put into a flask and mixed with hydrochloric acid to produce calcium chloride‚ water and carbon dioxide. The formula for this reaction is: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l) Purpose: The purpose of this experiment is to determine how the surface area of CaCO3(s) affects the rate of
Premium Carbon dioxide Chlorine Calcium carbonate
can be identify. Chemicals: Concentrated Hydrochloric acid (about 10 cm3) The following solids (0.1 g) for flame tests: Barium chloride Calcium chloride Copper (II) chloride Magnesium chloride Potassium chloride Sodium chloride Unknown solids containing a single cation and labelled X‚ Y and Z Apparatus: Bunsen burner Insulation mat Platinum wire (or Nichrome wire)‚ Watch glass Safety precaution: As concentrated hydrochloric acid is corrosive‚ skin contact should be avoided
Premium Sodium chloride Flame test Potassium