You have been provided with three test tubes. One of them containsdistilled water and the other two contain an acidic solution and a basicsolution, respectively. If you are given only red litmus paper, how willyou identify the contents of each test tube?
Question
You have been provided with three test tubes. One of them containsdistilled water and the other two contain an acidic solution and a basicsolution, respectively. If you are given only red litmus paper, how willyou identify the contents of each test tube?
Solution
Sure, here are the steps to identify the contents of each test tube using red litmus paper:
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Take the red litmus paper and dip it into the first test tube. Observe the color change. If the red litmus paper turns blue, it means the solution is basic. If there is no color change, it means the solution is either acidic or neutral.
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Repeat the same process with the second test tube. Again, if the red litmus paper turns blue, it means the solution is basic. If there is no color change, it means the solution is either acidic or neutral.
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Finally, repeat the process with the third test tube.
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By now, you should have identified the basic solution as the one that turned the red litmus paper blue. The test tube that did not change the color of the litmus paper could either be the acidic solution or the distilled water.
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To differentiate between the acidic solution and the distilled water, you can use the process of elimination. Distilled water is neutral and will not change the color of red litmus paper. Therefore, the test tube that did not change the color of the litmus paper and is not the basic solution, must be the distilled water. The remaining test tube is the acidic solution.
Remember, always handle chemicals with care and use appropriate safety equipment.
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