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Surface Area and Rate of Reaction

5. in the lab...

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5. in the laboratory during preparation of hydrogen gas mention the changes that would occur also write the chemical reaction for the following changes 1. Sodium Hydroxide is taken in place of sulphuric acid and tube is heated 2. In place of zinc copper turning are taken

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Q. In the laboratory during preparation of hydrogen gas mention the changes that would occur. Also write the chemical reaction for the following changes?
@in place of zinc granules ,same amount of zinc dust is taken in the test tube
@instead of dilute sulphuric acid ,hydrochloric acid is taken
@in place of zinc, copper turnings are taken
@Sodium Hydroxide is taken in place of sulphuric acid and the tube is heated

Q. In a laboratory preparation of hydrogen gas, what would happen (write chemical reactions) if the following changes are made?
1) in place of zinc granules, same amount of zinc dust is taken in test tube
2) instead of dilute sulphuric acid, hydrochloric acid is taken
3) In place of zinc, copper turning are taken
4) sodium hydroxide is taken in place of sulphuric acid and tube is heated

In the lab preparation of hydrogen gas, what would happen(write chemical equation ) if the following changes are made.

A) in place of zinc granules,same amount of zinc dust is taken in the test tube

b) instead of dilute sulphuric acid,HCL acid is taken

c)sodium hydroxide is taken in place of sulphuric acid and the tube is heated

d)in place of zinc,copper turnings are taken

In the above followings schematic diagram for the preparation of hydrogen gas as shown in the figure, what would happen if following changes are made?

If sodium hydroxide is taken in place of sulphuric acid and the tube is heated then hydrogen gas will be liberated.

State whether true or false :

Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated then which gas will be evolved?

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