Question

3. Answer question numbers 3a) - 3d) on the basis of your
understanding of the following paragraph and the related studied
concepts.
Ramesh went for the chemistry practical exam. The examiner gives him
to beakers labelled A and B containing two different solutions. Pirst he
has to identify which beaker contains acid and which contains a base. Then
he has to determine the strength of the acid. Finally he has to measure the
pH of the given acid at three different temperatures. Also he has to show
the reaction with a metal
3) Which test will help Ramesh to differentiate between acid and base?
1
3) Which indicator should be use in the titration he undertakes for
determining the strength of the acid?
i)litmus paper
ii) phenolphthalein
iii) turmeric paper
iv) conductivity measurement
3.C) What trend would Ramesh observe in the pH values of the acid at
different temperatures
i)pH will decrease with increasing temperature
ii)pH will increase with increasing temperature
(iii) pH will decrease with decreasing temperature.
(iv) pH will not change with temperature
3d) Write the chemical equation of acid and base with copper metal.​

Answer 1

Answer I am not now sorry

Answer 2

In Ramesh's chemistry practical exam.

1. The test that will help Ramesh to differentiate between acid and base is any of the following

I pH paper test

II Phenolphthalein test

III Litmus paper test

IV Turmeric paper test

2. The indicator that should be use in the titration he undertakes for determining the strength of the acid is

III turmeric paper

3. The trend that Ramesh would observe in the pH values of the acid at different temperatures is

I pH will decrease with increasing temperature

4. The chemical equation of acid and base with copper metal is:

I Acid: Copper doesn't react with non-oxidising acids such as dilute sulphuric acid, but reacts with oxidising acids like nitric acid, hot and concentrated sulphuric acid.

II Base: Copper does not directly react with bases.