Chemistry
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:
(a) magnesium powder
(b) powdered zinc metal. Give a word equation for each reaction.
Acids Bases Salts
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Answer
A = Strongly acidic
B = neutral
C = slightly alkaline
D = Strongly alkaline
E = slightly acidic
(a) Solution A (acidic solution)
Solution A (acidic solution) + magnesium powder ⟶ Hydrogen + Mg salt
(b) Solution A (acidic solution)
Solution A (acidic solution) + powdered zinc metal ⟶ Hydrogen + Zn salt
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