Recorded data- Before - CuO-porcelain boat -62-869g CaCl2-U-tube -80-483gAfter-Porcelain boat -contents -54-869g CaCl2-U-tube -89-483gReactions- Zns-2HClaq- ZnCl2aq-H2g then H2g-CuOs- H2Og-CusWhat was the reason placing tube of CaCl2 between the generator and the tube containing the porcelain boat-

The correct option is B To absorb evaporated H_2O A tube of #160; CaCl_2 was placed between the generator and the tube containing the porcelain boat ...

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Byju's Answer

Standard XII

Chemistry

Adsorption and Absorption

Recorded data...

Question

Recorded data:
Before $:$ $C u O +$ porcelain boat $= 62.869$ g
$C a C l_{2} +$ U-tube $= 80.483$ g
After:Porcelain boat $+$ contents $= 54.869$ g
$C a C l_{2} +$ U-tube $= 89.483$ g
Reactions: $Z n (s) + 2 H C l (a q) \to Z n C l_{2} (a q) + H_{2} (g)$ then $H_{2} (g) + C u O (s) \to H_{2} O (g) + C u (s)$
What was the reason placing tube of $C a C l_{2}$ between the generator and the tube containing the porcelain boat?

To absorb evaporated HCl

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To absorb evaporated

H_{2} O

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To slow down the gases released

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To absorb the evaporated Zn particles

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To remove the initial air that passes through the tube

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Solution

The correct option is B To absorb evaporated $H_{2} O$
A tube of $C a C l_{2}$ was placed between the generator and the tube containing the porcelain boat to absorb evaporated $H_{2} O$ . $C a C l_{2}$ is a drying agent. It removes moisture from hydrogen gas.

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Similar questions

Q. Recorded data:
Before

:

C u O +

porcelain boat

= 62.869

C a C l_{2} +

U-tube

= 80.483

g
After:Porcelain boat

+

contents

= 54.869

C a C l_{2} +

U-tube

= 89.483

g
Reactions:

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

then

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

What type of reaction occurred in the porcelain boat?

Q. Recorded data:
Before

:

C u O +

porcelain boat

= 62.869

C a C l_{2} +

U-tube

= 80.483

g
After:Porcelain boat

+

contents

= 54.869

C a C l_{2} +

U-tube

= 89.483

g
Reactions:

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

then

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

Which of the following is an observation rather than a conclusion?

Q. Recorded data:
Before

:

C u O +

porcelain boat

= 62.869

C a C l_{2} +

U-tube

= 80.483

g
After:Porcelain boat

+

contents

= 54.869

C a C l_{2} +

U-tube

= 89.483

g
Reactions:

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

then

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?

Q. Recorded data:
Before

:

C u O +

porcelain boat

= 62.869 g

C a C l_{2} +

U-tube

= 80.483 g

After:Porcelain boat

+

contents

= 54.869 g

C a C l_{2} + U

-tube

= 89.483 g

Reactions:

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

then

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. 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?

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The correct option is B To absorb evaporated H2OA tube of CaCl2 was placed between the generator and the tube containing the porcelain boat to absorb evaporated H2O. CaCl2 is a drying agent. It removes moisture from hydrogen gas.

The correct option is B To absorb evaporated $H_{2} O$
A tube of $C a C l_{2}$ was placed between the generator and the tube containing the porcelain boat to absorb evaporated $H_{2} O$ . $C a C l_{2}$ is a drying agent. It removes moisture from hydrogen gas.