LAB 6. ACIDS AND BASES: PH AND BUFFERS PURPOSE: To determine the pH of common acids and bases using a pH meter‚ pH paper‚ and red cabbage indicator. To test the effect of adding an acid or base to a buffer solution. SAFETY CONCERNS: Always wear safety goggles. Wash with soap and water if skin contacts acids or bases. ACIDS: An Acid is a substance that when dissolved in water will produce hydrogen ions‚ H+‚ in the solution. An acid that does not contain carbon is called an inorganic
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Acid Property #1: The word acid comes from the Latin word acere‚ which means "sour." All acids taste sour. Well known from ancient times were vinegar‚ sour milk and lemon juice. Aspirin (scientific name: acetylsalicylic acid) tastes sour if you don’t swallow it fast enough. Other languages derive their word for acid from the meaning of sour. So‚ in France‚ we have acide. In Germany‚ we have säure from saure and in Russia‚ kislota from kisly. Base Property #1: The word "base" has a more complex
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Experiment 4: ACIDS AND BASES: PH Measurements and Macroscale Titration CHM023L – A12 Group no. 6 Members: | Contributions: | | Conclusion | | Recommendation | | Tables and figures with analysis | | Principles‚ Equation | | Abstract‚ tables | Date Performed: February 28‚ 2012 - Tuesday Date Submitted: March 6‚ 2012 - Tuesday Submitted to: ------------------------------------------------- ABSTRACT: This experiment introduces us the pH measurement and application of macroscale titration
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| An acid is a chemical substance any of various typically water soluble and sour compounds that are capable of reacting with a base to for a salt‚ that redden litmus paper‚ that evolve hydrogen on reaction with various metals‚ that in water solution yield hydrogen ions‚ and that have hydrogen containing molecules or ions able to give up a proton to a base or that are substances able to accept and unshared pair of electrons from a base. An alkaline is a chemical compound that neutralizes or effervesces
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What is Acid Rain? First identified in 1872 in Sweden and studied in the U.S. beginning in the 1950s‚ acid rain is precipitation in the form of rain‚ snow‚ hail‚ dew‚ or fog that transports sulfur and nitrogen compounds from the high atmosphere to the ground. Sulfur dioxide (SO2) and nitrogen oxides (NO‚ NO2) are bi-products from burning fuels in electric utilities and from other industrial and natural sources. These chemicals react with water‚ oxygen‚ carbon dioxide‚ and sunlight in the atmosphere
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ANTACID WILL NEUTRALIZE STOMACH ACID THE BEST AND IS MOST COST- EFFECTIVE? Description This experiment was conducted to find out how effective different types and brands of antacids are at neutralizing acid. I also looked at the cost of each product in order to determine if my hypothesis would be correct. The experiment was done using 4 brands of antacid‚ Pepto-Bismol‚ Gaviscon‚ Tums and Tagamet. Hypothesis All the antacids will neutralize different amounts of acid but the most expensive one
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to no side effects. Prolonged daily use increases the risk of upper gastrointestinal complications such as stomach bleedingOmeprazole suppresses gastric acid secretion by specific inhibition of the H+/K+-ATPase in the gastric parietal cell. By acting specifically on the proton pump‚ omeprazole blocks the final step in acid production‚ thus reducing gastric acidity headache‚ diarrhea‚ abdominal pain‚ nausea‚ dizziness‚ trouble awakening and sleep deprivation Levothyroxine Levothyroxine is approved
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A buffer is an aqueous solution that allows resistance to significant change in pH when small amounts of strong acids or base are added to it. (Boundless‚ 2015) This is usually formed when a weak acid is added to a salt of its conjugate base. (Chemicool.com‚ 2014) When an Alka Seltzer tablet is dissolved in water‚ a buffer is formed when the weak acid citric acid is present with sodium citrate (citrate ion) the conjugate base (Buffer Balancing Acts Buffers‚ 2009) "Na3C3H5O7 (aq) + 3 HCl (aq)
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Running head: BSRN - 340 - PHARMACOLOGY – DIPHENHYDRAMINE - OD Diphenhydramine Overdose in a 26-year-old Woman BSRN – 340 – Pharmacology for Nurses April 24th‚ 2009 Diphenhydramine Overdose in a 26-year-old Woman Paramedics were dispatch to the apartment of a 26-year-old woman who reportedly ingested two full bottles of diphenhydramine 45 minutes prior to the arrival of emergency medical services. According to the paramedics’ report‚ they found the patient unconscious with a respiratory
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"Burp!" You cover your mouth with your hand‚ but it’s too late. The people at the next table in the lunchroom already heard. As you turn back to your soda‚ you think: Where did that burp come from? A burp — sometimes called a belch — is nothing but gas. When you eat or drink‚ you don’t just swallow food or liquid. You also swallow air at the same time. The air we breathe contains gases‚ like nitrogen (say: ny-truh-jen) and oxygen (say: ahk-sih-jen). Sometimes when you swallow these gases‚ they
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