Question

How many grams of solute are in 2.5 L of a solution which is 20% w/v ?

Answer 1

Answer:

500 g

Explanation:

A solution's mass by volume percent concentration, % m/v, is a measure of the number of grams of solute present for every 100 mL of the solution.

So if you take exactly 100 mL of a given solution, the number of grams of solute present in that sample will give you the solution's mass by volume percent concentration and vice versa.

In your case, the solution is 20% m/v, which means that it contains 20 g of solute for every 100 mL of the solution.

20%m/v ⇒ 20 g.solute in.100 mL.of solution

You can thus say that your sample contains

2.5L solution⋅103mL1L⋅20 g solute100mL solution=500 g solute−−−−−−−−−−

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