Test tube 1 (methyl Orange): The color change in test tube 1 with 2 drops of methyl orange would depend on the pH of the liquid from the car battery. Methyl orange is an acid-base indicator that changes color in acidic and basic solutions. If the liquid in the car battery is acidic, the methyl orange would turn red. If it is basic, the methyl orange would turn yellow.
Test tube 2 (phenolphthalein): Phenolphthalein is also an acid-base indicator but has a different range of pH sensitivity compared to methyl orange. In acidic solutions, phenolphthalein is colorless. However, in basic solutions, phenolphthalein turns pink or purple. So, if the liquid in the car battery is basic, the phenolphthalein in test tube 2 would change to pink or purple.
Test tube 3 (litmus paper solution): Litmus paper is a pH indicator that turns red in acidic solutions and blue in basic solutions. Therefore, if the liquid in the car battery is acid, litmus paper solution in test tube 3 would turn red. If the liquid is basic, the litmus paper solution would turn blue.
The liquid from a car battery was placed in three test tubes. To the first test tube 2 drops of methyl Orange were added, in the second test tube 2 drops of phenolphthalein were added, in the last test tube 2drops of litmus paper solution was added
State the colour changes in test tubes 1,2 &3
1 answer
1 answer