PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
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Answer variants:
Hydrochloric acid (\(HCl\)) reacts with magnesium ribbon faster because it is a strong acid, and so the complete dissociation of ions takes place faster, causing the fizzing, whereas acetic acid is a weak acid and reacts slower compared to hydrochloric acid.
\(Mg + 2HCl \rightarrow MgCl_2 + H_2\)
Therefore the correct answer is Test tube A.
\(Mg + 2HCl \rightarrow MgCl_2 + H_2\)
Therefore the correct answer is Test tube A.
When chlorine is passed over solid slaked lime for an extended period of time at \(313 K\), bleaching powder is formed. It is also known as lime chloride.
\(Ca(OH)_2 + Cl_2 \rightarrow CaOCl_2 + Cl_2 + H_2O\)
The chemical formula for bleaching powder is \(CaOCl_2\), but the actual composition is quite complex.
Uses of \(CaOCl_2\):
•Used as a disinfectant for drinking water and also as a sanitiser for swimming pools.
•Used in the manufacturing of chloroform.
\(Ca(OH)_2 + Cl_2 \rightarrow CaOCl_2 + Cl_2 + H_2O\)
The chemical formula for bleaching powder is \(CaOCl_2\), but the actual composition is quite complex.
Uses of \(CaOCl_2\):
•Used as a disinfectant for drinking water and also as a sanitiser for swimming pools.
•Used in the manufacturing of chloroform.
Hydrochloric acid (\(HCl\)) reacts with magnesium ribbon faster because it is a weak acid, and so the complete dissociation of ions takes place faster, causing the fizzing, whereas acetic acid is a strong acid and reacts faster compared to hydrochloric acid.
Therefore the correct answer is Test tube B.
Therefore the correct answer is Test tube B.
1. What happens when chlorine is passed over slaked lime at \(313 K\)? Write chemical equation of the reaction involved and state two uses of the product.
2. Equal lengths of magnesium ribbon are taken in test tube ‘A’ and ‘B’. Hydrochloric acid (\(HCl\)) is added to test tube A’ while acetic acid (\(CH_3COOH\)) is added to test tube ‘B’. In which test tube, will fizzing occur more vigorously and why?
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