How to titrate cocacola because of its dark colour

Chemistry

2 answers:

ivolga24 [154]3 years ago

7 0

Answer and Explanation

__________________________________________________________

All of the Information below is not owned by me, it is owned by CCBCMD.

__________________________________________________________

Colas are also carbonated beverages. The carbonation can produce some carbonic acid in the Cola, which would affect your results. Therefore, to ensure that you are only titrating the phosphoric acid you will use de-carbonated soda. This can easily be obtained by gently heating the soda, or as you may already know, by rapidly shaking the bottle. It is also important that we do not use diet Colas since the artificial sweeteners that they contain have acidic functional groups that will also interfere with the titration.

__________________________________________________________

Use a 25.00-mL pipet to deliver exactly 25.00 mL of room temperature, de-carbonated 

Cola into a 250-mL beaker. Check out a magnetic stir bar and gently add it to the 

beaker. Place the beaker on a stir plate. Set up a pH meter so that the probe is completely immersed, but in a way that the stir bar will not hit it. The tip of the probe 

has a thin glass membrane. Handle it with care! Position the beaker so that the stir bar 

is as close to the center of the beaker as possible for optimal stirring. It should stir 

rapidly enough to ensure thorough mixing but not so rapidly as to cause splattering. 

__________________________________________________________

Obtain about 75 mL of 0.0100 M NaOH in a beaker. Use this NaOH to fill a buret.

Remember that you should always rinse a buret 2-3 times with the solution that you are

about to put into it and remove air bubbles at the buret tip. If you do not remember how

The initial level of the NaOH should be at exactly

0.00 mL. Once the buret is ready, place it over the beaker containing the Cola

__________________________________________________________

Hope this helps! <3

__________________________________________________________

Bas_tet [7]3 years ago

4 0

Answer:

add baking soda maybe

Explanation:

You might be interested in

Which terms describe plastics that can and potentially be recycled?

hammer [34]

C describes plastics that can be recycled. Thermoplastic can be remolded and reheated after forming, whereas thermoset strengthens when heated

8 0

2 years ago

Which of the following compounds has the general formula X3Y2?Which of the following compounds has the general formula X3Y2?

prisoha [69]

There are no above options to choose from so I am giving an example of a X3Y2 formula which is Magnesium nitride, the formula is Mg3N2.

6 0

2 years ago

Consider the given acid ionization constants. identify the strongest conjugate base.

WARRIOR [948]

The question is incomplete. Complete question is:
Consider the given acid ionization constants. identify the strongest conjugate base.
HNO2(aq) 4.6×10−4
HCHO2(aq) 1.8×10−4
HClO(aq) 2.9×10−8
HCN(aq) 4.9×10−10
.........................................................................................................................
Correct Answer: option 4: HCN(aq) 4.9×10−10

Reason:
According to Lowry and Bronsted theory of acid and base. Stronger the acid, weaker will be the conjugate base.

In present case, ionization constant is highest of HCN i.e. 4.9× $10^{-10}$ . This signifies that, it is the strongest acid. Hence, conjugate base associated with this acid (i.e. $CN^{-}$ ) is the weakest.