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daser333 [38]
2 years ago
12

With the help of balanced chemical equation explain what happens when:(1)Zinc is put in dilute hydrochloric acid (2)Zinc is put

in concentrated sodium hydroxide.(3)Hydrogen is passed over hot tungsten oxide.(40Hydrogen is reacted with carbon monoxide in presence of a catalyst.

Chemistry
2 answers:
Viktor [21]2 years ago
8 0

Answer:

1) Zn(s)+2HCl(aq)--->ZnCl_{2}+H_{2}(g)

2) Zn+2H_{2}O+2NaO-->Na_{2}Zn(OH)_{4}+H_{2}(g)

3) 3H_{2}(g)+W_{2}O_{3}--->3H_{2}O+2W(s)

4) CO(g)+2H_{2}(g)--->CH_{3}OH

Explanation:

The following happens:

(1)Zinc is put in dilute hydrochloric acid

There is an evolution of hydrogen gas as the Zinc undergoes oxidation by hydrogen and it reduces the hydrogen to hydrogen gas.

Zn(s)+2HCl(aq)--->ZnCl_{2}+H_{2}(g)

(2)Zinc is put in concentrated sodium hydroxide.

Again there is evolution of hydrogen gas and formation of zincate sodium. This happens when we heat the mixture.

Zn+2H_{2}O+2NaO-->Na_{2}Zn(OH)_{4}+H_{2}(g)

(3)Hydrogen is passed over hot tungsten oxide.

The hydrogen reduces the tungsten metal during the reaction and it gives solid tungsten metal.

3H_{2}(g)+W_{2}O_{3}--->3H_{2}O+2W(s)

(4) Hydrogen is reacted with carbon monoxide in presence of a catalyst.

This is producer gas reaction.

CO(g)+2H_{2}(g)--->CH_{3}OH

UkoKoshka [18]2 years ago
6 0
Find the attached document.

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