5 Answered Questions for the topic Acids/Bases



Coffee is brown and bitter in taste. Is it an acid? Or a base? Don't give the answer without any test. You are in the dark with its taste.

This is a riddle from my NCERT Science Textbook of 7th class.


Effective buffer range?

The Ka for a hypothetical weak acid HX is 3.1 x 10-5. Buffer solutions containing HX and NaX could be prepared to make a range of pH values. What would be the lower and upper pH values of the... more
Acids/bases Chemistry Titrations Ph


Calculate the Ka of a weak acid?

A sample of a certain monoprotic weak acid was dissolved in water and titrated with 16.00mL of 0.125M NaOH to reach the equivalence point. During the titration, the pH after adding 2.00mL of NaOH... more
Acids/bases Chemistry Ph


Calculate pH

[NH4Br](aq) = 0.020M , pKa of NH4+= 9.24   Given that the question is asking for pH, I know I need to find the [H3O+], so I've set up the reaction to look like this: NH4Br (aq) + H2O ⇌ H3O+ +... more


Methyl orange indicator in .1 M NH3(aq)

I'm a new york state chemistry student preping for the regents and need help with this regents question. Why is it that when methyl orange indicator is put into a 0.10 M solution of NH3 (aq) it... more

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