(a) What would you expect the pH of the pure water to be?
(b) What colour would the universal indicator show in an aqueous solution of sugar? Why?
(c) A sample of rainwater turned universal indicator paper yellow. What would you expect its pH to be? Is it a strong or a weak acid?
(a) What would you expect the pH of the pure water to be?
(b) What colour would the universal indicator show in an aqueous solution of sugar? Why?
(c) A sample of rainwater turned universal indicator paper yellow. What would you expect its pH to be? Is it a strong or a weak acid?
(a) The pH of pure water is 7. In general, water with a pH lower than 7 is considered acidic, and with a pH greater than 7 is considered basic. The normal range for pH in surface water systems is 6.5 to 8.5, and the pH range for groundwater systems is between 6 to 8.5
(b) The universal indicator would show a green colour in an aqueous solution of sugar because the solution is neutral and the colour neutral is green.
(c) Expected pH to be 5.6 Even clean, normal rain has a pH of about 5.6. This is because it reacts with carbon dioxide in the atmosphere and forms mildly acidic carbonic acid before it becomes rain. So it is acidic.
(a) The pH of pure water is 7. In general, water with a pH lower than 7 is considered acidic, and with a pH greater than 7 is considered basic. The normal range for pH in surface water systems is 6.5 to 8.5, and the pH range for groundwater systems is between 6 to 8.5
(b) The universal indicator would show a green colour in an aqueous solution of sugar because the solution is neutral and the colour neutral is green.
(c) Expected pH to be 5.6 Even clean, normal rain has a pH of about 5.6. This is because it reacts with carbon dioxide in the atmosphere and forms mildly acidic carbonic acid before it becomes rain. So it is acidic.
