Titration simulation write up

Topics: Acid, PH indicator, Phenolphthalein Pages: 6 (258 words) Published: November 14, 2013
SCIENCE TITRATION SIMULATION

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TRIAL 1:!
This reaction was strong acid vs. strong base!

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Known: Acid!

Unknown: Base

HCl

NaOH

Volume!

25.00 mL

18.66 mL

Molarity

0.1396 M

Uknown

Name!

Indicator

!

Methyl Orange!
Turned red when mixed with the acid solution.!
After adding 18.66 mL of base, turned orange.

After having added the correct amount of base to the acid solution mixed with indicator, we can calculate the concentration of the base solution.!
CAVA = CBVB!
CB = CAVA / VB!
CB = 0.1396M x 25.00 mL / 18.66 mL!
CB = 3.49 M / 18.66!
CB = 0.1870 M!

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The molarity of the
base solution is
0.1870M!

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SCIENCE TITRATION SIMULATION
TRIAL 2:!
This reaction was weak acid vs. strong base!
Known: Base!

Unknown: Acid

NaOH

CH3COOH

Volume!

25.00 mL

20.60

Molarity

0.2138 M

Unknown

Name!

Indicator

Bromothymol Blue!
Turned blue when mixed with the base solution.!
After adding 20.60 mL of acid, turned yellow.

!

After having added the correct amount of acid to the base solution mixed with indicator, we can calculate the concentration of the acid solution.!
CAVA = CBVB!
CA = CBVB / VA!
CA = 0.2138 M x 25.00 mL / 20.60 mL!
CA = 5.345 M / 20.60!
CA = 0.2594 M!

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The molarity of
the acid solution
is 0.2594 M!

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SCIENCE TITRATION SIMULATION
TRIAL 2:!
This reaction was strong acid vs. strong base!
Known: Base!

Unknown: Acid

NaOH

HCL

Volume!

25.00 mL

20.1

Molarity

0.1911 M

Unknown

Name!

Indicator

Bromothymol Blue!
Turned blue when mixed with the base solution.!
After adding mL of acid, turned yellow.

After having added the correct amount of acid to the base solution mixed with indicator, we can calculate the concentration of the acid solution.!
CAVA = CBVB!
CA = CBVB / VA!
CA = 0.1911 M x 25.00 mL / 20.1 mL!
CA = 4.7775 M / 20.1!
CA = 0.23768657 M

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