Question

You are supplied with five solutions : A, B, C, D and E with pH values follows:
A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic & 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.

Answer 1

Dear Student
A- Strongly acidic
B-Neutral
C-Basic
D-Straongly basic
E- acidic
Magnesium powder will liberate H2 gas than Zinc.
Mg+H2O - Mg(OH)2+H2O
​Zn+H2O - Zn(OH)2+H2O
it will liberate H2 with neutral (B)
Regards