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Azeotropic Mixtures

From recorded...

Question

From recorded data:
Weight of U-tube $20.36$ g
Weight of U-tube and calcium chloride before $39.32$ g
Weight of U-tube and calcium chloride after_ $57.32$ g
Weight of boat and contents(copper oxide)before_ $30.23$ g
Weight of boat and contents after_ $14.23$ g
Weight of boat___ $5.00$ g
What is the reaction for the first $C a C l_{2}$ drying tube?

A

Generate water

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B

Absorb hydrogen

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C

Absorb water that evaporates from the flask

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D

Decompose the water from the flask

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E

Act as a catalyst for the combination of hydrogen and oxygen

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Solution

The correct option is C Absorb water that evaporates from the flask
The first $C a C l_{2}$ drying tube absorb water that evaporates from the flask.
Zn reacts with $H C l$ to produce hydrogen gas. The hydrogen gas contains moisture. When it passes trough first $C a C l_{2}$ drying tube, the moisture is absorbed by $C a C l_{2}$ which is a drying agent. The hydrogen gas coming out of first $C a C l_{2}$ drying tube is dry and free of moisture.

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Similar questions

Q. From the recorded data:
Weight of U-tube_____

20.36

g
Weight of U-tube and calcium chloride before______

39.32

g
Weight of U-tube and calcium chloride after______

57.32

g
Weight of boat and contents(copper oxide)before_____

30.23

g
Weight of boat and contents after________

14.23

g
Weight of boat_______

5.00

g
What conclusion can be derived from the data collected?

Q. From the recorded data:
Weight of U-tube

= 20.36

g
Weight of U-tube and calcium chloride before

= 39.32

g
Weight of U-tube and calcium chloride after

= 57.32

g
Weight of boat and contents(copper oxide)before

= 30.23

g
Weight of boat and contents after

= 14.23

g
Weight of boat

= 5.00

g
Determine the ratio of the mass of water formed to the mass of hydrogen used in the formation of water?

Q. Recorded data:
Before

:

C u O +

= 62.869

g

C a C l_{2} +

= 80.483

g
After:Porcelain boat

+

= 54.869

g

C a C l_{2} +

= 89.483

Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)

H_{2} (g) + C u O (s) \to H_{2} O (g) + C u (s)

What was the reason placing tube of

C a C l_{2}

between the generator and the tube containing the porcelain boat?

Q. Recorded data:
Before

:

C u O +

= 62.869 g

C a C l_{2} +

= 80.483 g

After:Porcelain boat

+

= 54.869 g

C a C l_{2} + U

= 89.483 g

Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)

H_{2} (g) + C u O (s) \to H_{2} O (g) + C u (s)

What conclusion can you draw after the completion of this experiment?

Q. Recorded data:
Before

:

C u O +

= 62.869

g

C a C l_{2} +

= 80.483

g
After:Porcelain boat

+

= 54.869

g

C a C l_{2} +

= 89.483

Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)

H_{2} (g) + C u O (s) \to H_{2} O (g) + C u (s)

How many grams of hydrogen were used in the formation of the water as product?

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