Identify the gas released during the following reactions.
i) Sodium reacts with water.
ii) Carbon dioxide reacts with water in the presence of chlorophyll and sunlight.
iii) Dilute acetic acid is added to baking soda.
iv) Ammonium chloride is heated with Sodium hydroxide.
v) Dilute Hydrochloric acid is heated with Iron sulphide.
Answers
Answer:
iii) Dilute acetic acid is added to baking soda.
Answer:
1. Sodium react with water? A colourless solution is formed, consisting of strongly alkalic sodium hydroxide (caustic soda) and hydrogen gas. This is an exothermic reaction. Sodium metal is heated and may ignite and burn with a characteristic orange flame.
2. Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. ... The conversion of usable sunlight energy into chemical energy is associated with the action of the green pigment chlorophyll. Chlorophyll is a complex molecule.
3. The reaction between baking soda (sodium bicarbonate) and vinegar (dilute acetic acid) generates carbon dioxide gas, which is used in chemical volcanoes and other projects.
4. Ammonium chloride appears to sublime upon heating but actually decomposes into ammonia and hydrogen chloride gas. Ammonium chloride reacts with a strong base, like sodium hydroxide, to release ammonia gas: NH4Cl + NaOH → NH3 + NaCl + H2O.
5. Sulphur is soluble in non polar solvent like carbon disulphide (CS2). The compound iron sulphide (FeS) is formed on heating iron (Fe) and sulphur (S). Iron sulphide reacts with dilute hydrochloric acid forms hydrogen sulphide (H2S) gas which turns lead acetate paper into shiny black.
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