Table of Contents
- 1 Why is methyl orange a bad indicator for this titration?
- 2 Can we use methyl orange for strong acid strong base titration?
- 3 Why methyl orange is not suitable for the titration of weak acid and strong base?
- 4 Why is methyl orange not an Arrhenius base?
- 5 Which indicator is not used for weak base and strong acid titration?
- 6 Is methyl orange used for weak acid?
- 7 What happens when methyl orange is added to base?
- 8 What is the colour of methyl orange in acid base titration?
- 9 Which indicator is used as an indicator in acid base titration?
Why is methyl orange a bad indicator for this titration?
For litmus, it so happens that the 50 / 50 colour does occur at close to pH 7 – that’s why litmus is commonly used to test for acids and alkalis. As you will see below, that isn’t true for other indicators. Methyl orange is one of the indicators commonly used in titrations….
| indicator | pKind |
|---|---|
| phenolphthalein | 9.3 |
Can we use methyl orange for strong acid strong base titration?
We have to choose the indicator for titration of a strong acid and strong base. In this case any indicator that has pH range 3.5 to 10 is capable of identification of equivalence point or end point. So, among the given options, methyl orange and phenolphthalein can be used as indicators in acid base titration.
Why methyl orange is not suitable for the titration of weak acid and strong base?
Weak Acid against Strong Base: This is due to the hydrolysis of sodium acetate formed. Hence phenolphthalein is a suitable indicator as its pH range is 8-9.8. However, methyl orange is not suitable as its pH range is 3.1 to 4.5.
What is the effect of methyl orange on acid?
Methyl orange has the property to color alkaline and neutral water yellow. If the water becomes acidic, it turns red immediately. The point of change is at pH 4.3. If the solution is yellow, hydrochloric acid at a concentration of 0.1 mol/L is used for the titration.
Which indicator is best for weak acid strong base titration?
A suitable indicator for the titration of the weak acid CH3COOH(aq) and the strong base NaOH(aq) would be either thymol blue (pH range 8.0 – 9.6) or phenolphthalein (pH range 8.3 – 10.0).
Why is methyl orange not an Arrhenius base?
Because it changes colour at the pH of a midstrength acid, it is usually used in titrations for acids. Methyl orange shows red colour in acidic medium and yellow colour in basic medium.
Which indicator is not used for weak base and strong acid titration?
Choice of Indicators
| Types of titration | Indicators |
|---|---|
| Strong acid-weak base | Methyl orange will change sharply at the equivalence point. |
| Weak acid-weak base | Neither phenolphthalein, not methyl orange is suitable. No indicator is suitable because it requires a vertical portion of the curve over two pH units. |
Is methyl orange used for weak acid?
In the acid-base titration involving a strong base and a weak acid, methyl orange can be used as an indicator.
Is methyl orange for weak acid and strong base?
Methyl orange is a good chemical indicator in strong acid weak base titration as it changes its basic color to acidic color. Methyl Orange shows red color in acidic medium and yellow color in basic medium.
What is the effect of methyl orange on base?
Methyl orange is a popular pH indicator that is used in titration. The colour of the solution turns red when methyl orange is used as an indicator of acid. When methyl orange is mixed with a base, the result is yellow, or the colour changes to yellow.
What happens when methyl orange is added to base?
When methyl orange added with base , it will be yellow or we can say that it change into yellow colour. Methyl orange is used as pH indicator.
What is the colour of methyl orange in acid base titration?
In the acid-base titration involving a strong base and a weak acid, methyl orange can be used as an indicator. Methyl orange changes its colour in pH range 3 to 5. is 3.74. So Assertion is incorrect. Again at pH values less than 3, methyl orange is red and a pH values greater than 4.4, it will be yellow.
Which indicator is used as an indicator in acid base titration?
In the acid – base titration involving a strong base and a weak acid, methyl orange can be used as an indicator. > In the acid – base titratio…
What is the color of methyl orange in a reaction?
Methyl orange is an indicator. It changes color from red to orange to yellow over the pH range of 3.1–4.4. To be usable as an indicator in an acid-base reaction, the indicator’s color change needs to overlap the pH change of the equivalence point (where the acid (or base) amount roughly equal to the amount of titrant).
What is the difference between phenolphthalein and methyl orange?
When the pH rises to 4.4, methyl orange changes to a bright orange color. While phenolphthalein is used for base titrations and some acid titrations, and universal indicators have a full spectrum of color changes, methyl orange is used specifically for acid titrations because it has a very clear…