Chemistry
Grade-9
Easy
Question
What is the chemical formula for Tetrasulfur pentoxide?
- SO
- S4O
- S4O5
- S5O4
Hint:
The prefix of the chemical name becomes subscript in the formula.
The correct answer is: S4O5
- From the name tetrasulfur pentoxide we come to know there are four sulfur and five oxygen atoms.
- The prefix of the chemical name becomes subscript in the formula.
- The chemical formula will be S4O5.
An inorganic substance with the formula S4N4 is tetrasulfur tetranitride. The most significant binary sulfur nitride—compounds containing sulfur and nitrogen —is this solid with a golden-poppies hue. Due to its unusual structure and bonding, it is a precursor to many S-N compounds.
¶To air, S4N4 is stable. However, it is unstable in the thermodynamic sense with a positive enthalpy of formation of +460 kJ/mol. The difference in energy between S4N4 and its extremely stable breakdown products is what causes this endothermic enthalpy of formation:
¶2 S4N4 → 4 N2 + S8
¶Metal complexes and S4N4 react. Therefore, in some instances, the cage is still in good condition, but not in others.
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