Chromic Acid
Question 1: Why Chromic Acid is used for cleaning?
Answer:
Chromic acid is a strong oxidizing agent. Its solution in sulfuric acid is a powerful oxidizing agent. If glassware becomes unduly clouded or dirty it must be cleaned with a chromic acid cleaning solution. It can be used to clean laboratory glassware, particularly of otherwise insoluble organic residues.
Question 2: What are the uses of chromium?
Answer:
Chromium is a chemical element with the symbol Cr. It has many uses. It is used to make molds for bricks. It is used to harden steel manufacture stainless steel and produce several alloys. It is used in metallurgy to impart corrosion resistance and a shiny finish as dyes and paints.
Question 3: Is chromic acid hexavalent?
Answer:
Chromium is a chemical element with the symbol Cr its atomic number is 24 and its electronic configuration is [Ar]3d5 4s1. It is a naturally occurring element found in rocks .plants, soil, animals, volcanic dust, and gases. Chromic acid is a strong oxidizing agent with the chemical formula H2CrO4. This chromium in an oxidation state of +6 is often referred to as hexavalent chromium.
Question 4: How corrosive is chromic acid?
Answer:
Chromic Acid is a strong oxidizing agent. It is a corrosive chemical and its contact can irritate the skin and eyes. Its solution is corrosive to metals and tissues. It is soluble in water with the release of heat.
Question 5: What happens when Chromic Acid reacts with calcium hydroxide?
Answer:
Chromic Acid is a strong oxidizing agent it reacts with calcium hydroxide to form calcium chromate and water
Ca(OH)2 + H2CrO4 ———–> 2 H2O + CaCrO4
Chromic Acid Formula
Hydrogen is a chemical element with the symbol H and its atomic number is 1 and its electron configuration is 1s1. It is the lightest element. It is colorless, odorless, tasteless, non-toxic, and highly combustible. It is an extremely flammable gas, it burns in the air and oxygen to produce water. It is used in the synthesis of Ammonia and the manufacturing of Nitrogenous fertilizers. It is used as rocket fuel and is used in the production of hydrochloric acid.
Chromium is a chemical element with the symbol Cr. Its atomic number is 24 and its electronic configuration is [Ar]3d5 4s1. It is a steely gray, lustrous, hard, and brittle transition metal. It is not found as a free element in nature but is found in the form of ores. The main ore of chromium is Chromite.
Oxygen is a chemical element with the symbol O and the atomic number is 8. It is a colorless, odorless, tasteless gas essential to living organisms. It is a reactive element that is found in water, in most rocks and minerals, and in numerous organic compounds. It is the most abundant element in the earth’s crust. It is life-supporting gas and highly combustible.