(PLEASE ANSWER  THESE QUESTIONS.)

1.WHAT IS THE COLOR AND PH OF ACETIC ACID?

2.WHAT ARE THE CONSTITUENTS OF UNIVERSAL INDICATOR?

3.FOR A NEUTRAL SOLUTION PH OF A SOLUTION IS 10 TO THE POWER -7 ....I MEAN WHY IS IT -7 . WHY NOT +7.WHAT DOES THAT MEAN.

Hi,

 

The pH of the acid solution depends upon its concentration. But in general, acetic acid is a weak and colourless acid.

 

Universal indicator is a mixture of methyl red, α naphtholphthalein, thymolphthalein, phenolphthalein and bromothymol blue. Universal indicator gives different colours at different pH. The pH range of universal indicator is 4 to 11.for e.g. at pH =4, it gives red colour and at 10, it gives blue violet colour, etc.

 

By convention, we take scale from 0 to 14 to denote the acidity or basicity of any solution. if it is less than 7, we call the solution to be acidic and if above 7 , we call it basic.

We take pH= -log [H⁺]

If we take concentration of the neutral solution to be 10⁷, the pH will come out to be -7. But by convention, we have taken the scale to be positive. Also the concentration of hydrogen ions in any solution cannot be this large, no matter how much concentrated it is.

 

Hope it helps.

Cheers!