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# Acid-base theory

## Titrations

### Exercise 1

$20.0 mL$ $NH_3$ $0.1 M$ are titrated by $H Cl$ $0.1 M$ . Let's call $x$ the volume of $H Cl$ already added at a given moment.

a) Theoretically establish the function $pH = f(x)$ .

b) Give a table of values of the function by searching images (1 mL intervals of x). Graph on graph paper please!

c) Choose a suitable indicator for this titration.

d) Search graphically in what time interval during addition (between which $x$) we observe the color change of phenolphthalein, if that was the indicator chosen. Is this a suitable indicator?