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In the following schematic diagram form ...

In the following schematic diagram form the preapratinn of hydrogen gas as shown in the figure what would happen if the following chnges are made? ltbvrgt
(a) In plae of zinc granules , same amount of zinc dust is taken in the test tube
(b) Instead of dilute suplhuric acid , dilute hydrochloric acid is taken.
(c ) In place of zinc, copper turnings are taken
(d) Sodium hydroxide is taken in place of dilute suphuric acid and the tube is heated.

Text Solution

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(a) Hydrogen gas would evolved at a greater speed because zinc dust provides more surface area as compared to zinc granules.
(b) Both would react in the same way. There would be no effect on the volume of the gas evolved.
(c ) Copper does not react with either dilute HCl or dilute `H_(2)SO_(4).` No gas would evolve in both the cases.
(d) Hydrogen gas would evolve in this case also.
`Zn +2NaOH overset("heat")to underset("Sod. zincate")(Na_(2))ZnO_(2)+H_(2)`
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In the following schematic diagram for the preparation of hydrogen gas as shown in the figure what would happen 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, dilute hydrochloric acid is taken. (c) In place of zinc, copper turnings are taken (d) Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.

In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? In place of zinc granules, same amount of zinc dust is taken in the test tube.

In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? In place of zinc, copper turnings are taken.

In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? Instead of dilute sulphuric acid, dilute hydrochloric acid is taken.

In the following schematic diagram for the preparation of hydrogen gas as shown in figure, what would happen if following changes are made ? Sodium hydroxide is taken in place of dilute sulphuric acid and the tube is heated.

Zinc is treated with dilute hydrochloric acid.