From a mixture of CO2 and H2 gases, CO2 can be separated by passing the mixture through:
Correct answer: B. Water under high pressure
- A. Water at high temperature
- B. Water under high pressure
- C. Cold water
- D. Acidified water
Explanation
Carbon dioxide is separated from hydrogen by passing the mixture through the water under high pressure. When carbon dioxide is compressed into water at pressure, the CO2 gas dissolves into the liquid. When pressure is released, CO2 releases from the liquid as a gas in the form of gas bubbles. This process is also called carbonation and is the basis of many popular beverages. Since hydrogen will not dissolve in the water, the two gases will be effectively separated. Carbon dioxide will not dissolve in the forms of water given in all the remaining options, so separation can not occur, leaving only option B as the correct option.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Solutions and Colloids
Solutions are described using molarity, molality, normality, mole fraction, percentage concentration and parts per million. Coverage also includes vapour-pressure lowering, boiling-point elevation, freezing-point depression and osmotic pressure, then distinguishes true solutions, colloids and suspensions by particle size, stability, light scattering and settling.
Practise Solutions and Colloids
119 free Solutions and Colloids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Solutions and Colloids questions
The number of moles of solute dissolved per liter of solution is called:
An azeotropic mixture of two liquids has a boiling point higher than either of them when it:
Consider NaCl produced in the equation: FeCl3+ NaOH → Fe(OH)3 + NaCl 175.5g of NaCl was dissolved in water to make a liter of solution, the molarity would be:
The solubility product for BaSO4, at 18-25°C is:
0.5 molar solution NaOH contains:
The temperature at which one crystalline form changes to other is called _ temperature: