Question

3. Rubbing alcohols in groceries are shown to be either 40% or 70% solutions.
What do you think do these numbers mean in terms of solute and solvent?​

Answer 1

Answer:

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Answer 2

The numbers 40 or 70 represent the amount of rubbing alcohol present in the groceries.

• A solvent is the substance in which other substances can dissolves and it is usually in larger quantities than the solute.
• A solute is a substance that dissolves in the solvent to form a solution.
• Here, rubbing alcohol is the solute and water is the solvent.
• 40% rubbing alcohol means that in very one litre of the solution, there is 400 ml or 0.4 L of rubbing alcohol and 600 ml or 0.6 L of water.
• So 40% of the solution contains the rubbing alcohol and the rest 60% contains water.
• Similarly, the solution of 70% rubbing alcohol has 70% rubbing alcohol and 30% water.