Dalton’s Atomic Theory: Understanding the Evolution of Chemistry-quiz

Dalton's Atomic Theory Quiz

Dalton's Atomic Theory Quiz

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Calculate Grams of Sodium Bicarbonate Easily (Step-by-Step)

Calculate Grams of Sodium Bicarbonate | Stoichiometry Solution Problem: How many grams of sodium bicarbonate are required to neutralize 10.0 ml of 0.902 M vinegar? (1) 8.4 g (2) 1.5 g (3) 0.75 g (4) 1.07 g Calculate Grams of Sodium Bicarbonate To determine the mass of sodium bicarbonate (NaHCO₃) required to neutralize vinegar ( acetic acid , CH₃COOH), we use principles of stoichiometry . Step 1: Balanced Chemical Equation This is a neutralization reaction : NaHCO₃ (s) + CH₃COOH (aq) → CH₃COONa (aq) + CO₂ (g) + H₂O (l) The stoichiometric ratio is 1 : 1 . Step 2: Calculate Moles of Acetic Acid Given: Volume (V) = 10.0 mL = 0.0100 L Molarity (M) = 0.902 mol/L n = M × V = 0.902 × 0.0100 = 0.00902 mol Step 3: Moles of Sodium Bicarbonate Since ratio is 1:1: n(NaHCO₃) = 0.00902 mol Step 4: Calculate Mass Molar Mass of NaHCO₃: Na = 22.99 g/mol H = 1.01 g/mol C = 12.01 g/mol O...
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3.Carbon and Its Compounds

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  Very Short Answer Type Questions for Class 10 CBSE - Carbon and Its Compounds , along with answers: 1. Q: Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas? A: The gas evolved is carbon dioxide (CO₂) . It can be confirmed by passing it through lime water , which turns milky . 2. Q: Which of the following will give brisk effervescence with sodium hydrogencarbonate and why? CH₃COOH, CH₃CH₂OH A: CH₃COOH (ethanoic acid) will give brisk effervescence because it reacts with NaHCO₃ to release CO₂ gas. Ethanol (CH₃CH₂OH) does not react with NaHCO₃. 3. Q: Name the functional group present in an organic compound which gives brisk effervescence with NaHCO₃. A: Carboxylic acid group (–COOH) 4. Q: Name the hydrocarbon formed when ethanol is heated with conc. H₂SO₄ at 170°C. What is this reaction known as? A: The hydrocarbon formed is ethene (C₂H₄) . This reaction is called dehydration of ethanol . 5...
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   Very Short Answer Questions  with answers (1-mark each) from the Class 10 CBSE Science Chapter  "Carbon and its Compounds"  — based on the questions you've listed: 1. Name the element whose one of the allotropic forms is buckminsterfullerene. Answer:  Carbon. 2. What are the two properties of carbon which lead to the formation of a large number of carbon compounds? Answer:  Catenation and tetravalency. **3. State whether the following statement is true or false: “Diamond and graphite are the covalent compounds of carbon element (C).”** Answer:  True. 4. Name the scientist who disproved the 'vital force theory' for the formation of organic compounds. Answer:  Friedrich Wöhler. 5. Name the element whose allotropic form is graphite. Answer:  Carbon. 6. In addition to some propane and ethane, LPG cylinders contain mainly two isomers of another alkane. Name the two isomers and write their condensed structural formulae. Answer: n-butane ...
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