also be able to determine the enthalpy of neutralization for the reaction of a strong acid (phosphoric acid) and a strong base (sodium hydroxide). Experimental: Materials: The materials needed for this lab included; 2 large beakers‚ a Calorimeter Styrofoam cup‚ computer‚ stirring rod‚ 2 thermometers‚ Logger Program‚ and Probes volumetric pipet. Sodium hydroxide (NaOH) (corrosive and toxic)‚ and phosphoric acid (H3PO4) (corrosive and toxic) were used. Procedure: The calorimeter was set up as shown
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used (ml) | 30.6 | 30.2 | 30.0 | | | | | Acid to Base Ratio | 0.87 | 0.86 | 0.86 | Average acid/base ratio | 0.86 | | | | | Base to Acid Ratio | 1.14 | 1.16 | 1.17 | Average base/acid Ratio | 1.16 | Name: Jared Philip Condez Date Performed: June 28‚ July 2 & 5‚ 2013 Partner: Shiela Mae Molina Date Submitted: July 12‚ 2013 Experiment 3 ACID – BASE TITRATION I. Objectives * Determine the purity of Potassium Acid Phthalate * To titrate effectively
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School of Nursing‚ Midwifery and Interprofessional Studies. With reference to acid-base balance explore the role of the respiratory system in maintaining blood pH? ‘We live and die at the cellular level’ (Reid‚ 2011). Homeostasis is crucial for normal cellular function. Acid-base homeostasis is the part of human homeostasis and refers to the balance between the production and elimination of H+ hydrogen ions (pH) within the body fluids (William‚ Simpkins‚ 2001‚ p.236). Metabolic reactions
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------------------------------------------------- HUMAN TOOTH------------------------------------------------- Teeth of humans are small‚ calcified‚ whitish structures found in the mouth that are used to break down food. The roots of teeth are embedded in the maxilla (upper jaw) or the mandible (lower jaw) and are covered by gums. Teeth are made of multiple tissues of varying density and hardness.COMPOSITION OF TOOTH | Four major tissues make up the tooth: * Enamel * Dentin * Cementum
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the concentration of the acid solution changes the rate of the reaction between dilute hydrochloric acid and magnesium metal. • As the metal reacts with the acid‚ hydrogen gas is produced and the metal dissolves. To get an estimate of the rate of reaction‚ the time taken for a small piece of magnesium ribbon to dissolve (disappear) can be measured. This is a “clock reaction” and the reaction rate is proportional to 1/time taken SAFETY Dilute hydrochloric acid is harmful. Wear safety spectacles
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ions etc. these soft drinks give feeling of warmth‚ lightness and have a tangy taste which is liked by everyone. Carbon dioxide is responsible for the formation of froth on shaking the bottle. The carbon dioxide gas dissolved in water to for carbonic acid which is also responsible for tangy taste.
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NUCLEIC ACIDS I.BASIC CONCEPTS II.CLASSES III.CHEMICAL NATURE IV.FUNCTION I.BASIC CONCEPTS NUCLEIC ACIDS polymeric macromolecules‚ or large biological molecules‚ essential for all known forms of life are made from monomers known as nucleotides Each nucleotide has three components: a 5-carbon sugar‚ a phosphate group‚ and a nitrogenous base If the sugar is deoxyribose‚ the polymer is DNA. If the sugar is ribose‚ the polymer is RNA. Together with proteins‚ nucleic acids are the most
Free DNA
Citric acid reacts rapidly with iron‚ but is not itself the rusting of iron. The water in the lemon juice helps iron rust‚ but in the presence of air. The same happens when you open bottle of Coca-Cola‚ including citric acid‚ phosphoric acid‚ carbonic acid and other things in the fall for the taste. Citric acid has an advantage over some other acids‚ because it is less corrosive‚ not as dangerous to the environment‚ while remaining efficient‚ cheap (but not as cheap as the old battery acid). The
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CHEMISTRY PROJECT Submitted by- Submitted To- ACKNOWLEDGEMENT I would like to thank for her help and guidance in the completion of the project and also for giving me the opportunity to learn so much through this project. Also‚ my sincere thanks to for the support and encouragement she shows by providing us with such an opportunity. CERTIFICATE It is hereby to certify that original and genuine investigatory
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COMPARATIVE STUDY AND QUALITATIVE ANALYSIS OF DIFFERENT BRANDS OF COLD DRINKS AVAILABLE IN MARKET. CHEMISTRY PROJECT On Content of Cold Drinks Available in the Market Poison vs. Nutrition AIM COMPARATIVE STUDY AND QUALITATIVE ANALYSIS OF DIFFERENT BRANDS OF COLD DRINKS AVAILABLE IN MARKET. CERTIFICATE It is hereby to certify that‚ the original and genuine investigation work has been carried out to investigate about the subject matter and the related data collection and investigation has been completed
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