Question

granulated zinc is preferred over pure zinc in laboratory explain why.​

Answer 1

Answer:

Granulated zinc is preferred over pure zinc due to its high surface area which facilitates reaction.

Explanation:

As the surface area of the reactants increases, the amount of the products formed also increases. granulated zinc has a high surface area so that more reagents can act at a time, this facilitates the reaction. zinc granulates on reaction with acid liberates hydrogen gas.  If pure zinc is reacted with an acid, the reaction would be very slow.

Answer 2

Answer:

The reasons for use of granulated zinc are listed below

• Granulated Zinc has more surface area compared to it's pure zinc form.

• This increased surface area makes reactions go much faster when it is used in laboratory preparation of hydrogen gas.

• It may contain copper in very minute amounts which acts as a sort of catalyst.