Pure water has a neutral pH of 7.0. However, rainwater naturally absorbs carbon dioxide (CO2) from the atmosphere, which dissolves in the water to form carbonic acid (H2CO3). This process slightly acidifies the rainwater, bringing its pH down to approximately 5.6.
pH of normal rain water is about
Asked in Assistant Conservator of Forest Exam 2019 · Topic: Acid, Base and Salt (Acid Rain and its Environmental Effects)
More Chemistry questions
- You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. Which of them will turn red litmus to blue?
- Which of the following statements about universal indicator is/are true ? 1. It is a mixture of several indicators. 2. It shows different colours at different concentrations of hydrogen ions in solution. 3. It helps to determine the strength of given acid and base in titration. Select the correct answer using the code given below :
- What is the color of Litmus solution when it is neither acidic nor basic ?
- A stain of curry on a white cloth becomes reddish brown when soap is scrubbed on it. It turns yellow again when the cloth is washed with plenty of water. It had turned reddish brown because :
- Fill in the blank appropriately. A trap laid for apprehending a Govt. employee taking bribe used phenophthalein powder coated currency notes. A solution of sodium carbonate sprinkled on the notes must turn _______ for lending proof for the crime.
- Suppose you have four test tubes labelled as 'A', 'B', 'C' and 'D'. 'A' contains plain water, 'B' contains solution of an alkali, 'C' contains solution of an acid, and 'D' contains solution of sodium chloride. Which one of these solutions will turn phenolphthalein solution pink ?
- Which one of the following is the correct sequence of change in colours when a turmeric stain on white clothes is scrubbed by soap and then washed with water ?
- A suitable indicator used for titration between strong acid and weak base is -