1. What were the concentrations of samples A and B? 2. What are some possible sources of error in a titration experiment? Share some tips to minimize errors with your classmates. 3. What is an example of a problem that could be solved using a titration in the real world? Comment on other students' ideas. 4. Phenolphthalein was used as the indicator in this experiment. The universal indicator exhibits a rainbow of colors for the entire pH range. Do you think using the universal indicator would also work for this lab? Justify your answer and comment on another student's answer to explain why you agree or disagree.