In which option is the solute state same but the solvent state different?
Answer and explanation
Correct answer: Oxygen in water and hydrogen in palladium
The governing idea is that a solution is classified by the physical states of its solute and solvent. In oxygen dissolved in water, oxygen is a gaseous solute and water is liquid. In hydrogen dissolved in palladium, hydrogen is also a gaseous solute, but palladium is solid. Thus the solute state remains gas while the solvent state changes from liquid to solid, making A correct. In B and D both solvents are liquid.
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What is the correct answer to this question?
Oxygen in water and hydrogen in palladium
Why is this the correct answer?
The governing idea is that a solution is classified by the physical states of its solute and solvent. In oxygen dissolved in water, oxygen is a gaseous solute and water is liquid. In hydrogen dissolved in palladium, hydrogen is also a gaseous solute, but palladium is solid. Thus the solute state remains gas while the solvent state changes from liquid to solid, making A correct. In B and D both solvents are liquid.
Which subject and chapter does this question cover?
This is a Class 9 Science question. Chapter: Exploring Mixtures and Their Separation. Topic: Solute and solvent.
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