English, asked by simasinghns, 8 months ago

CHANGE THE SPEECH .
1. The patient said, " Thanks a lot , Doctor ."

2. She said," Alas ! we are ruined."
3. Suresh said," Goodbye, my friends."
4. He wished that he had the wings of a bird .
5. The poor little boy said," If I were a Prince."
6. The wife requested her husband to pardon their son his first mistake.

Answers

Answered by aarohisingh62
0

Explanation:

ANSWER

Oleum consists of SO

3

and H

2

SO

4

.

Let the mass of SO

3

in the given sample of oleum be =x g

Mass of H

2

SO

4

in the given sample of oleum =(0.5−x)g

Eq. mass of SO

3

=

2

80

=40

No. of g equivalents of SO

3

=

40

x

[2NaOH+SO

3

→Na

2

SO

4

+H

2

O

2NaOH+H

2

SO

4

→Na

2

SO

4

+2H

2

O]

Eq. mass of H

2

SO

4

=

2

98

=49

No. of g equivalents of H

2

SO

4

=

49

(0.5−x)

Total no. of g equivalents =

40

x

+

49

(0.5−x)

26.7 mL of 0.4 N NaOH contain no. of equivalents of NaOH

=

1000

0.4

×26.7

At equivalence point,

No. of g equivalents of NaOH=

40

x

+

49

(0.5−x)

So,

1000

0.4×26.7

=

40×49

49x+(40×0.5−40x)

x=

9

0.9328

=0.1036

Hence, % of free SO

3

=

0.5

0.1036

×100

=20.72%

Attachments:
Answered by khanbeauty794
0

Answer:

boy" (and any subsequent words) was ignored because we limit queries to 32 words.

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