During combustion analysis, which one is used for absorbing carbon dioxide?
Correct answer: A. 50% KOH solution
- A. 50% KOH solution
- B. Mg(CLO4)2
- C. 5% KOH
- D. Silica gel
Explanation
During combustion analysis, CO2 is chemically absorbed in 50% KOH. While H2O vapors are physically absorbed in Mg(CLO4)2 because Mg(CLO4)2 is hygroscopic.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
Practise Fundamental Concepts of Chemistry
894 free Fundamental Concepts of Chemistry 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 Fundamental Concepts of Chemistry questions
Absorption of CO2 in KOH solution during combustion analysis is?
112 ml of gas is produced at STP by the action of 0.412 gm of ROH alcohol with CH3Mgl. The molecular mass of alcohol is:
When 16.6 g of KI is treated with an excess of KCIO3 in the presence of 6M HCl, ICl is produced. The amount of KCIO3 consumed and the ICl formed are:
How many electrons have to be removed to ionize 1.0 x 10^-6 moles of Ne atoms to Ne+ ions in a neon advertising tube?
Which one is the molar volume of the gas at STP?
Amount of oxygen in grams which contains 1.5 x 10^22 molecules: