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Questions and Answers
What is the role of calcium hypochlorite (CaOCl₂) in the paper making industry?
What common symptoms might occur if bleach is accidentally ingested?
What process is involved in the production of bleaching powder (CaOCl₂) as per the provided text?
How is bleaching powder (CaOCl₂) commercially prepared according to the text?
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Which chemical compound is commonly known as bleaching powder in the text?
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What immediate action should be taken if bleach is ingested, based on the text?
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Which branch of chemistry focuses on compounds containing metals and their oxides?
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Where are the representative elements located on the periodic table?
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Which type of atoms are categorized as metalloids in the periodic table?
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Which element reacts violently with water among the representative elements?
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Which of the following groups contains elements from both the s and p blocks?
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What distinguishes metalloids from metals and nonmetals?
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What trend can be observed when moving horizontally across a period on the periodic table?
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Which elements are examples of common elements falling in the s-block of the periodic table?
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What type of reaction occurs between sodium hydroxide and dilute hydrochloric acid?
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Why do p-block elements exhibit different behavior compared to s-block elements?
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Which form of phosphorous reacts differently depending on the compound it interacts with?
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What is a common example of a reaction involving s-block elements?
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Study Notes
Bleaching Powder (CaOCl₂)
- Used as a bleaching agent and disinfectant
- Calcium hypochloride (CaOCl₂) is its chemical compound name
- Commonly prepared by the Hasenclever Process
- Can be hazardous if ingested, causing symptoms such as sore throat, nausea, and vomiting
- Immediate medical attention required if ingested
Inorganic Chemistry
- Studies matter and its interactions with energy and other forms of matter
- Divided into two main branches: organic and inorganic chemistry
- Inorganic chemistry focuses on compounds containing metals and their oxides
Representative Elements
- Also referred to as main group elements or central family elements
- Located in the middle of the periodic table (groups 1-7 and 14-18)
- Each element has unique properties, such as lithium's violent reaction with water
S and P Blocks
- Categorize inorganic materials based on atom types: metal, nonmetal, or metalloid
- S and p blocks represent a significant portion of inorganic chemistry
- Many common elements fall within these blocks, including aluminum, iron, and calcium
Group Trends
- Patterns observed when going across a row or down a column on the periodic table
- Examples: atomic radius increases, ionization potential decreases, and electronegativity decreases as you move horizontally
Reactions of S Block Elements
- Can involve acids, bases, heat, cold, pressure, or simple substances like salt
- Examples: neutralizing acids using alkaline earth metal hydroxides or forming complexes
- Equation: NaOH + HCl → NaCl + H₂O
Reactions of P Block Elements
- Have multiple valence electrons available near the nucleus
- Exhibit different behavior, including the ability to act as Lewis acids or bases
- Examples: phosphorous exists in three forms (white, black, and red) and reacts differently depending on the compound it interacts with
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Description
Learn about the uses of bleaching powder, also known as calcium hypochloride (CaOCl₂), in the canning process, paper making industry, and as a bleaching agent and disinfectant. Discover its role in ensuring food safety and quality, removing outer skin of fruits, and in wood fibers and paper recycling processes.
