You are having five solutions A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 8 and E = 5 Which solution would be most likely to liberate hydrogen with magnesium powder?

Question

Philoid · Accepted Answer

When magnesium powder reacts with HCl, it forms magnesium chloride and liberated hydrogen gas.

The reaction that takes place is:

Mg + 2HCl → MgCl₂ + H₂

As we know that HCl is a strong acidic solution. The pH of acidic solution is less than 7. Being a strong acid, the pH of HCl is 1.8.

You are having five solutions A, B, C, D and E with pH values as follows:A = 1.8, B = 7, C = 8.5, D = 8 and E = 5Which solution would be most likely to liberate hydrogen with magnesium powder?

You are having five solutions A, B, C, D and E with pH values as follows:
A = 1.8, B = 7, C = 8.5, D = 8 and E = 5

Which solution would be most likely to liberate hydrogen with magnesium powder?