Is Graphite a Metal or Nonmetal? Answer: Although graphite is a conductor of heat and electricity, it is a nonmetal because – Physical Properties: (i) Graphite is ductile and non-expansive.(ii) Striking graphite does not produce a metallic sound. Chemical Properties: (i) Graphite does not react with mild acids to produce salts and hydrogen.(ii) Oxide of […]
Is Mercury a Metal or Nonmetal? Answer: Although mercury is a liquid, it is a metal because—
Is Hydrogen a Metal or Nonmetal? Answer: Although hydrogen is an electropositive element, it is a nonmetal because—
Is sodium a Metal or Nonmetal? Answer: Although sodium is lighter than water, sodium is a metal, because—
Is Diamond a Metal or Nonmetal? Although diamond is shiny and hard, it is nonmetal because—
Conc H2SO4 is not used in the preparation of H2S. Explain Answer: Concentrated H2SO4 is not used in H2S preparation. Because concentrated H2SO4 is an oxidising acid; The H2S produced by the acid reaction with ferrous sulphide oxidizes concentrated H2SO4 to sulphur, which itself reduces to produce sulfur dioxide (SO2). H2S + H2SO4 = S
Conc H2SO4 is not used in the preparation of H2S. Explain Read More »
Hydrogen sulphide (H2S) Colorless gas with a smell like rotten eggs. Hydrogen sulphide is heavier than air. This gas is soluble in cold water but insoluble in hot water. Hydrogen sulphide contains Hydrogen and Sulphur. Following are some experiments to prove that. Prove that Hydrogen sulphide contains Hydrogen and Sulphur Presence of Hydrogen in Hydrogen
Prove that Hydrogen sulphide contains Hydrogen and Sulphur. Read More »
Why is concentrated H2SO4 not used to dry H2S? Answer: Concentrated H2SO4 is not used to dry H2S. Because concentrated H2SO4 oxidizes hydrogen sulfide (H2S) to yellow sulfur and itself reduces to produce SO2. H2S + H2SO4 = S ↓ + SO2 ↑ + 2H2O
Why is H2S not dried by Quicklime or Anhydrous Calcium Chloride? Answer: Anhydrous Calcium Chloride (CaCl2) or Quicklime/Calcium oxide (CaO) is not used to dry H2S. Because anhydrous CaCl2 reacts with acidic H2S to form calcium sulfide. CaCl2 + H2S = CaS + 2HCl H2S reacts with quicklime (CaO) to form calcium sulphide. Therefore, H2S
Why is H2S not dried by Quicklime or Anhydrous Calcium Chloride? Read More »
