Question

What feedback You are the TA for this experiment, and the following hypothesis is handed in to you. would you give to the student in order to help them write a better hypothesis in the future? Please respond in one to three sentences. 4) In a titration, an acid and a base react, to form a salt, and water. The salt then reacts, with the indicator and turns the solution pink. When the solution is pink the moles of salt, and base are equal, and therefore the concentration of the acid can be determined. In this way, the concentration, of the a can be determined accurately, and precisely. cid Critical Thinking Question - Please use one to three concise sentences to answer this question, which should be more than sufficient. Keep in mind these are potentially real situations that we have encountered in labs in the past. A student properly places diluted acid in their flask and diluted base in their buret. After adding an entire buret full of base to the acid, they do not observe the color change that they expected. What could cause this? 5)

Answer 1

4) The main aim of acid-base titration is determine the concentration of unknown acid using
a base of known concentration. When titration is done basically until neutralization occurs
between acid and base.

5) It is said in the question that both the acid and base are diluted which means that it would
take a lot more of base than expected to reach the equivalent point as number of moles
of base / acid per volume of is less. This is the reason why you will not observe color
change as expected.