Question

You are having five solutions P, Q, R, S and T with pH values as follows: P = 1.8, Q = 7, R = 8.5, S = 8 and T = 5. Which solution would be most likely to liberate hydrogen with magnesium powder?
(a)Solution P and Q
(b)Solution P
(c)Solution R
(d)All of the above

Answer 1

Answer:

all of the above and Q is neutral hence it doesn't evolve to form hydrogen gas

Explanation:

because with metal base and acid both react to form hydrogen and salt

Answer 2

B) Solution P

Explanation:

Because strong acids are most likely to react with manesium ( a base ) to liberate hydrogen gas