32. What is the formula for hydrosulfuric acid? What is the formula for sulfurous acid? What is the formula for sulfuric acid? What is an indicator? This is actually one question. Solution Answer: Hydrosulfuric acid: H2S. The oxidation state of Sulfur=-2 and H=+1, so the charge is balanced when we use two Hydrogen\'s. Basically acid means it contains Hydrogen ions. Sulfurous acid: H2SO3. It is weak and unstable acid. It is formed when SO2 reacts with water. It is intermediate in acid rain. Sulfuric acid: H2SO4. It is stable strong acid and highly exothermic when it dissolved in water. Indicator: The substances which show a color change when react with acids and bases. Example: Litmus paper. Blue litmus turns into red when it is contacted with acid and red litmus turns into blue when it is contacted with base. Thanks and please let me know if you have any doubt. .

1. 32. What is the formula for hydrosulfuric acid? What is the formula for sulfurous acid? What is
the
formula for sulfuric acid? What is an indicator?
This is actually one question.
Solution
Answer:
Hydrosulfuric acid: H2S. The oxidation state of Sulfur=-2 and H=+1, so the charge is balanced
when we use two Hydrogen's.
Basically acid means it contains Hydrogen ions.
Sulfurous acid: H2SO3. It is weak and unstable acid. It is formed when SO2 reacts with water. It
is intermediate in acid rain.
Sulfuric acid: H2SO4. It is stable strong acid and highly exothermic when it dissolved in water.
Indicator: The substances which show a color change when react with acids and bases.
Example: Litmus paper. Blue litmus turns into red when it is contacted with acid and red litmus
turns into blue when it is contacted with base.
Thanks and please let me know if you have any doubt.