Question

Date-23/10/20.
Home work for Durga puja holiday.
1-Name the acid present in -Tomato and vinegar.
2-What happen -?
(a) When bleaching powder is kept open in air.
(b) Chlorine gas is passed through dry slaked lime.write the equation of (a)and (b).
3-Give one example each of thermal decomposition and electrolytic decomposition.
Raman Srivastava.​

Answer 1

Answer:

1. Acid in tomato - Citric acid and oxalic acid Acid in vinegar -Acetic acid
2. If bleaching powder is held exposed in the air, it reacts with carbon dioxide (CO2) from the atmosphere to produce calcium carbonate (CaCO3) and chlorine gas (Cl2). Calcium carbonate is a food supplement that is used when the calcium contained in the diet is not adequate. CaOC1² + Co² → CaCo³ + C1.
3. When chlorine is passed over dry slaked lime at room temperature, the main reaction product is CaOCl2 (bleaching powder). The reaction is as follows: Ca(OH)2+Cl2→CaOCl2+H2O.
4. 1) thermal decomposition: CaCO3 heat = CaO +CO2.

2)electrolytic decomposition: 2h2o electrolysis = 2H2 + O2. 3) photo decomposition: AgCl sunlight = Ag +Cl2