SSC CPO 2019 PYQ — Question 74

SSC CPO Tier I - 9th December 2019 - Shift 1 • General Awareness • Q74

Which chemical law proposes that 'soft drinks and soda bottles are sealed under high pressure to increase the solubility of CO2'?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is Option 2 i.e. Henry's law.

  • ​Henry's Law states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid. 
  • Henry's Law can be expressed as: Concentration of a gas in liquid phase = K x Partial pressure of that gas in the gas phase.
  • Here, 'K' is referred to as the Henry's Law constant which is a unique characteristics of every gas 
  • The most general application of Henry's Law is used in packing of soda cans and soda water bottles.
  • These are always packed under higher pressure to increase the solubility of CO2 gas.