water. It dissolves very well in an aqueous solution of iodide ions‚ in which it forms a complex ion called the triiodide ion. Triiodide is a combination of a neutral I2 molecule with an I- ion. The triiodide ion is yellow in dilute solution‚ and dark red-brown when concentrated. I2(aq) + I-(aq) ---> I3-(aq) 3.The triiodide is titrated with a standard solution of thiosulfate ions‚ which reduces the iodine back to iodide ions: I3-(aq) + 2S2O32-(aq)---> 3I-(aq) + S4O62-(aq) During this last reaction
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EXPERIMENT 8 – Reactions of Hydrocarbons Properties and Identification of Hydrocarbons Purpose: a) To identify saturated and unsaturated hydrocarbons using properties and reactions. b) Study substitution and addition reactions. Equipments test tube rack (1) test tube holder (2) 100 mL beaker medium test
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the concentrations will change while the mole number is remain the same. Based on this principle‚ the concentration of dilute solution can be determined by using followed equation: M1V1 = M2V2 Where M1 = concentration of concentrated solution (mol dm3) V1 = volume of concentrated solution (dm3) M2 = concentration of dilute solution V2 = volume of dilute solution Chemicals 0.100 M FeCl3 solution 0.100 M KCNS solution 0.005 M FeCl3 solution (B) Apparatus Burette
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to its components. The test for solubility tagged along the aphorism “like dissolves like” since coconut oil was dissolved in chloroform‚ ether‚ and carbon tetrachloride. The emulsification of fats in coconut oil was also conducted and the only the dilute albumin solution showed a positive effect. The saponification reaction was also conducted which is the focal procedure in the production of soap. Cholesterol‚ a simple lipid‚ was also tested in different color reactions which yielded to a negative
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gases evolved. Tests on KA1 Test (a) Add dilute hydrochloric acid to a small amount of solid KA1‚ then warm gently. (b) Dissolve solid KA1 in distilled water and filter. Use separate portions of the filtrate for the following tests. (i) Add aqueous sodium hydroxide‚ then in excess. (ii) Add aqueous ammonia‚ then in excess followed by aqueous ammonium chloride. (iii) Add aqueous iron (III) chloride‚ then warm. (iv) Add aqueous silver nitrate‚ followed by dilute nitric acid. (v) Add aqueous disodium hydrogen
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In the cells it has a purifying action and is responsible for eliminating waste products and other residue. • Water as solvent: In our bodies water acts as a solvent for our food so that this can be transported and processed. It also serves to dilute a number of harmful substances. • Thermal regulation – the skin as air conditioning: An additional important role of water is to regulate body temperature. Alongside other regulatory mechanisms‚ sweating also helps maintain body temperature constant
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content & blood volume) -Maintain acid-base balance -Control fluid & electrolytes -Excrete metabolic waste products -Control BP (renin-angiotensin-aldosterone) Urinary System Structure: Kidneys (produce urine)‚ Ureters (transport urine to bladder)‚ Bladder (stores urine)‚ Urethra (conduct urine outside body) *Nephron- working unit of kidney *Kidneys receive 25% of cardiac output= approx. 1 Liter *GRF= 125ml/min & increases at night Renal Hormones: ADH- works in DISTAL CONVOLUTED TUBULE
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Normally‚ the kidneys try to make up for high glucose levels in the blood by allowing the extra glucose to leave the body in the urine. If you do not drink enough fluids‚ or you drink fluids that contain sugar‚ the kidneys can no longer get rid of the extra glucose. Glucose levels in the blood can become very high as a result. The blood then becomes much more concentrated than normal
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Purpose; the purpose is to analyze and interpret data on the body’s utilization of carbohydrates‚ lipids and proteins. II. Introduction A urinalysis is the analysis of a urine sample. This test is common; it can be evaluated in a variety of ways. By; physical appearance‚ and chemical/ molecular properties. Your body’s urine is the excess of what the body doesn’t use. Things like carbohydrates‚ lipids and proteins. Your body uses each one of theses in many ways. Carbohydrates are a quick source
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Fluid‚ Electrolyte‚ and Acid-Base Balance: Introduction to Body Fluids 1. a. Where are fluids absorbed? ____________________ b. Where are excess fluids and electrolytes lost?____________________ 2. Name four of the six functions of water. a. b. c. d. 3. a. The amount of water in the body depends on the amount of ________________. b. From the CD‚ list the person with the highest and lowest percentage of water and give the percentage. 1. Highest ___________________ _______% 2. Lowest
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