MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Amino Acids

If 1 stands...

Question

If $1$ stands for true and $0$ stands for false, then choose the correct code for the following statement.
Only $50 %$ of $N a_{2} C O_{3}$ solution is indicated if it is neutralised by $H C l$ using phenolphthalein as the indicator.

Open in App

Solution

Phenolphthalein indicator operates in the pH range $8.0 - 9.8$ . At this pH, only one hydrogen ion can be added to carbonate ion to form bicarbonate ion.
Hence, only $50 %$ of sodium carbonate solution is indicated if it is neutralized by $H C l$ using phenolphthalein as an indicator.
Methyl red indicator operates in the pH range $4.2 - 6.3$ . At this pH, two hydrogen ions can be added to carbonate ion to form carbonic acid.
Hence, $100 %$ of sodium carbonate solution is indicated if it is neutralized by $H C l$ using methyl red as the indicator.

Suggest Corrections

thumbs-up

0

Similar questions

1

stands for true and

0

stands for false, then choose the correct code for the following statement:
Concentration of

N a_{2} C O_{3}

solution can be determined by titration with acid solution using methyl red as the indicator.

1

stands for true and

0

stands for false, then choose the correct code for the following statement:
End point in the titration of

C u S O_{4}

iodometrically (with starch as the indicator) is the disappearance of blue color.

1

stands for true and

0

stands for false, then choose the correct code for the following statement:

S O_{2}

turns acidified

K_{2} C r_{2} O_{7}

solution into a colorless solution.

1

stands for true and

0

stands for false, then choose the correct code for the following statement:
Pyrolusite can be estimated by iodometric method.

Q. If 1 stands for true and 0 stands for false, then choose the correct code for the following statement:

H_{2} S O_{4}

is a weaker acid than

H C l

H C l

is evolved when conc.

H_{2} S O_{4}

N a C l

.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Aminoacids and Proteins

BIOLOGY

Watch in App

explore_more_icon

Explore more

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon