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Maharashtra State BoardSSC (English Medium) 10th Standard

Give scientific reason. It takes time for pieces of Shahabad tile to disappear in HCl, but its powder disappears rapidly.

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Question

Give scientific reason.

It takes time for pieces of Shahabad tile to disappear in HCl, but its powder disappears rapidly.

Explain
Short/Brief Note
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Solution

  1. The rate of a chemical reaction depends upon the size of the reactant particles taking part in the reaction.
  2. Smaller the size of the reactant particles, higher is the rate of reaction.
  3. The size of reactant particles is more in pieces of Shahabad tile as compared to powder of Shahabad tile.
  4. When HCl is added to pieces of Shahabad tile, the CO2 effervescence is formed slowly. However, when HCl is added to Shahabad powder, the CO2 effervescence is formed at a faster rate.
    Hence, it takes time for pieces of Shahabad tile to disappear in HCl, but its powder disappears rapidly.
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Chapter 3: Chemical reactions and equations - Exercise [Page 45]

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Balbharati Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
Chapter 3 Chemical reactions and equations
Exercise | Q 4. b. | Page 45
SCERT Maharashtra Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
Chapter 3 Chemical reactions and equations
Write scientific reasons | Q 4

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