Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
Premium Acid dissociation constant Acid Acetic acid
REPORT EXPERIMENT 9 CARBOXYLIC ACID AND DERIVATIVES Date: January 19‚ 2004 Objectives: 1. To understand the reactions of carboxylic compounds and derivatives. 2. To know the methods for preparing carboxylic acid derivatives. 3. To know the methods for testing the carboxylic acid derivatives. Experimental Procedures: 9.1 Solubility 1. Prepare 3 test tubes with 3 ml of water in each. 2. Place 3 drops of acetic acid‚ benzoic acid‚ and oxalic acid in separate test tubes. 3. Shake and observe
Premium Acetic acid Carboxylic acid
------------------------------------------------- Hydrochloric acid From Wikipedia‚ the free encyclopedia (Redirected from Muriatic acid) Not to be confused with hydrogen chloride. Hydrochloric acid | | | | Other names[hide] * Muriatic acid[1] * Spirits of salt[2] | Identifiers | CAS number | 7647-01-0 | ChemSpider | 10633809 | UNII | QTT17582CB | EC number | 231-595-7 | ChEMBL | CHEMBL1231821 | ATC code | A09AB03‚B05XA13 | Properties | Appearance | Colourless
Premium Hydrochloric acid
Titration Lab How Much Citric Acid is in Your Soda? PURPOSE To determine the molarity (concentration) of citric acid (H3C6H5O7) in various different citrus flavored sodas. BACKGROUND PRINCIPLES Popular sodas all strive for a somewhat sour (’tart’) flavor and manufacturers utilize acids to impart this taste. While there are a vast variety of different brands of sodas on the market‚ they can be broken into two main categories: dark or clear. This differentiation is not only a simple color
Premium Acid
Crystallization of Benzoic Acid Purpose: The purpose of this experiment is to purify benzoic acid by crystallization. Procedure: 1. 0.5g impure benzoic acid was placed in a 50mL Erlenmeyer flask. 15mL of water was added and the mixture was heated to a boil on a hot plate. 0.5mL of water was added to the flask‚ while swirling the flask. The mixture was boiled until the benzoic acid completely dissolved. The total volume of water used was recorded. The black solid that remain in the dissolved
Premium Filter paper Laboratory glassware Temperature
Name: Citric acid Chemical Name: 2-hydroxypropane-1‚2‚3-tricarboxylic acid Chemical Formula: C6H8O7 Chemical Structure: pH: 4.18‚ 3.90‚ 3.57 Classification: Weak acid Uses: It is a natural preservative/conservative and is also used to add an acidic or sour taste to foods and drinks. It is also used mainly as an acidifier‚ as a flavoring‚ and as a chelating agent. Name: Vinegar acid Chemical Name: Acetic acid or ethanoic acid Chemical Formula: C2H4O2 Chemical Structure:
Premium Acetic acid Carboxylic acid Vinegar
Running head: ACID RAIN AND ITS EFFECTS Acid Rain: The Killer Rain Twanda Banks Grantham University April 5‚ 2011 Abstract Every time you turn on the television or take a ride in a car‚ you could be contributing to a problem called acid rain. Acid Rain is a serious problem with devastating effects. Every day this problem increases. Many believe that this issue is too small to deal with‚ but if the acid rain problem is not met with head on‚ the effects on people‚ plants‚ animals‚ and the
Premium Air pollution Acid rain Sulfur dioxide
Acid rain is a common term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture to produce a rain‚ snow‚ or hail of sulfuric and nitric acids. Such pollution may also be suspended in a fog‚ or the pollutants may be deposited in dry form. Environmental damage from acid rain has been reported in northern Europe and North America. High levels of acid rain have also been detected in other areas of the world‚ such as above the tropical rain forest of Africa. Acid rain
Premium Acid rain Sulfur dioxide Volcano
are several purposes to the amino acid lab experiment. One reason is to help us understand the concept of acids and bases and how they interact with one another. Another purpose is to understand what occurs when placed with the existence of buffers. Lastly‚ the experiment is to help us understand the applications of titrations and how it can be used in a real world setting‚ in this case‚ the identification of an amino acid. One must understand that amino acids all have special characteristics
Premium Chemistry Experiment Molecule
Acid Rains There are three gases which could cause acid rain‚ which are Sulphur Dioxide (sulphuric acid)‚ NOx (oxides of nitrogen which produce nitric acid) and also perhaps Carbon Dioxide (weak carbonic acid)‚ produces these acids because these gases dissolve in rain water/ precipitation and this forms a weak version of the acid‚ as the gases dissolve it lowers the pH of the rainwater. I think that there has been a increase in the production of acid rain‚ due to the fact that the country as a
Premium Fossil fuel Acid rain Natural gas