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प्रश्न
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with:
- magnesium powder,
- powdered zinc metal?
Give a word equation for each reaction.
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उत्तर
A = Strongly acidic
B = Neutral
C = Slightly alkaline
D = Strongly alkaline
E = Slightly acidic
- Solution (A) with magnesium powder would liberate hydrogen.
\[\ce{Magnesium + Acid -> Magnesium salt + Hydrogen}\] -
Solution (A) would liberate hydrogen with powdered zinc metal.
\[\ce{Zinc + Acid -> Zinc salt + Hydrogen}\]
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