Question

Write the color of change at the end point

Answer 1

Answer:

They both are indicators used to determine endpoint (equivalence points).

However, to aid in your knowledge, choice of indicators depends on the nature of titrant and titrate i.e. strong acid vs weak base, weak acid vs strong base etc.

now come to your question phenolphthalien is ideally used in where strong base is used and it gives the light pink color which becomes darker on further addition of base. (in acidic conditions it is colourless)

On the other hand methyl orange is used when strong acid is used and it turns from orange to yellow.

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Answer 2

End point detection

Explanation:

• All pH pointers utilized for corrosive base titration endpoint identification are frail acids or bases, with acidic structure contrasting in coloring from the conjugate base. Until further notice how about, we expect the two structures have obvious color - that doesn't need to be valid, yet we will examine one color indicator independently.  
• However, a color change isn't the moment. In some cases it appears as though it is - a little drop of the titrant totally changes arrangement color, yet at times - relying upon the grouping of titrant and titrated substance, just as on the chose pointer - we need to include even a few milliliters of titrant before the color change will reach a conclusion.