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Infer the time for the printed words to disappear if Test 2 was repeated using 15 cm3 of aqueous sodium thiosulfate and 15 cm3 of distilled water. SHOW YOUR SOLUTION ON HOW YOU COME UP WITH THE ANSWER.
Using a graduated cylinder, 50 cm3 of aqueous sodium thiosulfate was poured into a conical flask, followed by 10 cm3 of distilled water. The conical flask was placed on the printed sheet. 10 cm3 of the hydrochloric acid was added to the solution in the conical flask and the stop clock started.
The time for the printed words to disappear for test 2: 55 seconds