Bases

contributed whether it be money, work, or even his or her own life. Few people in Florida and even in our local area understand the important role Eglin Air Force Base played during World War II. The primary mission of the Base during World War II was to perform operational suitability testing for the Army Air Corps. Eglin Air Force Base was originally started as Valparaiso Airport in 1933. There was a purchase of an arrow-head shaped parcel of 137 acres. The area was cleared for use as an airdrome

Set up the titration apparatus as indicated by your teacher 2. Place 1250 ml beaker containing 75 ml HCl underneath the buret (buret already set up with the volume recorded) for titration and apparatus. 3. Record the initial volumes of the acid and base to the nearest 0.1 ml and record HCl volume of 75 ml 4. Add 2-3 drops of phenolphthalein into your beaker of acid

acid-base titration. Explain how the equivalence point of acid-base reaction can be determined using this indicator. State relevant reactions, pH ranges and qualitative

this lab, the pH of seven different substances and solutions were tested both before and after the addition of multiple drops of acid (HCl), or base (NaOH). Depending on the variation of the affected pH from the original, the buffer range of the substance could be calculated by finding the average pH fluctuation, both with the added acid and the added base. As shown in the graph above, the buffer is labelled in dark blue, and the average pH fluctuation from the original was only 1.12. This low pH

and water are used in car batteries as the electrolyte. Bases or alkali are a chemical that will react with acids and usually have a slimy or soapy feeling on contact with skin. Bases readily accept hydrogen ions and has a pH level that is higher the 7. Bases have a bitter taste and neutralise d by acids, producing water and a salt. Some common laboratory bases are Sodium Hydroxide, Potassium Hydroxide and Calcium Hydroxide. Stronger bases are commonly used today in many cleaning products. Indicators

The purpose of the experiment was to determine how a buffer works and how to use an acid-base indicator. The way a buffer works was determined by observing the changes in pH of solutions of different concentrations weak acids and their conjugate bases to determine how a buffer affects the pH change. The solution of 10 mL of 0.20 M CH3COOH and 10 mL of 0.20 M CH3COONa had slighter changes in pH than the solution of 10 mL of 0.0020 M CH3COOH and 10 mL of 0.0020 M CH3COONa. Both of these solutions were

of an unknown acid. Moreover, acids and bases react with the known stoichiometric ratios based on the coefficients of the balanced chemical reactions. If the stoichiometric ratio of an acid-base reaction is known the unknown concentration can be determined, however the reaction must have gone through completion and the number of moles of one of the components needs to known. The pH scale can be used to determine the change in concentration of an acid or base. The pH scale is calculated through the

ETC, and should be dealt with caution. Bases are technically the opposite of acids. Bases are chemical substances that are above seven on the pH scale and they cause litmus paper to turn blue. They have a very peculiar taste. Bases

identify whether it is an acid, base or neutral. Acids are aqueous solutions that contain H+ (hydrogen) ions. When identifying acids, they relatively have a sour taste, like the citric acid which is found in fruits. Some acids are safe to consume, however there are some acids like hydrochloric acid, nitric acid and others that cannot be eaten, as they are highly corrosive. Acids are also electrolytes which means they can conduct electricity. When it reacts with a base, it goes through a process of

types of compounds. The colours are different depending on what substance you are testing. The colours that we discovered in the pH scale are pink, red or orange. As for bases the colour was either light or dark green sometimes yellow. The colours for neutral, were violet or purple.In real life we are exposed to acids and bases everyday. For example, citric acid is in lots of citrus foods such as lemons, oranges and grapefruits. It is also added to foods for flavouring, non perishable, and cleaning