tion:To compare the pH of solutions of strong and weak ACIDS of the same concentration – hydrochloric acid (HCl) and acetic acid (CH3COOH).Materials Required:0.1M HCl, 0.01M HCl, 0.001M HCl, 0.0001 M HCl, and 0.00001M HCl test tubes, glass ROD, and universal indicator.The procedure of determining the pH using pH paper:-Take 2-3 drops of solutions of the given concentration on pH paper with the help of glass rod.Observe the change in colour of the pH paperMatch the shade of the pH paper with standard pH indicator chart.Note the approximate pH of the sampleThe procedure of determining the pH using universal indicator:Take dry 5 test tubes and fill 5 mL of each solution of various concentration given using measuring cylinder.Drop 2-3 drops of universal indicator in each test tube using a dropper.Note the change in the colour seen in the test tube.Compare the colour of the solution in the test tube with a standard pH indicator chartnote the pH of the solutionPrecautions to be taken during the experiment:Ensure to handle the test tube carefully.Do not add more indicator.Keep the pH paper clean.Compare the colour of the solution in the test tube and pH paper colour exactly with the standard pH indicator chart.Observationsample The colour produced on pH paper The colour produced in solution Approximate pH value Comparing the pH of solutions of strong and weak acids-observation0.1M HCl 0.01M HCl 0.001M HCl 0.0001M HCl 0.00001M HCl SWIPE leftViva Voice:What is the effect of dilution on pH?the pH of the acidic solution increases on dilutionthe pH of basic solution decreases on dilutionWhat is the universal indicator?Universal indicator is a mix of several INDICATORS having various pH range. It is USED to highlight the colour range due to change in pH.What is the pH of the acidic solution?Less than 7What is the pH indicator chart?It is a standard chart that displays the resultant colour with corresponding pH value.What is an acid-base indicator?It is an inorganic indicator that indicates the change in colour with the change in pH value. Test your Knowledge on Ph of solutions of strong and weak acids!Quiz ImagePut your understanding of this concept to test by answering a few MCQs. Click ‘Start Quiz’ to begin!