Concentration of unknown HCl? A9: 0.0985 mol/dm³
What is the volume of HCl pipetted each time? A2: 25.00 cm³
What color change signals the endpoint? A4: Colorless to permanent pale pink titration screen experiment level 2 answers quizlet
Moles of HCl in 25.00 cm³? A8: Same = 0.002462 mol
Here’s a for the Titration Screen Experiment (often from the Royal Society of Chemistry or similar interactive lab) – Level 2 – as if you were creating answers for a Quizlet set . Concentration of unknown HCl
What is the concordant titre range? A5: Within 0.10 cm³
Calculate the mean titre from: 24.60, 24.60, 24.65 cm³ A6: 24.62 cm³ A4: Colorless to permanent pale pink Moles of HCl in 25
What indicator is used? A3: Phenolphthalein
Why ignore the rough titre? A10: It is not accurate enough (overshoot possible) Final Answer for Level 2 (to submit or memorize) The concentration of the unknown hydrochloric acid is 0.0985 mol/dm³.
Moles of NaOH in mean titre? A7: 0.002462 mol