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A chemistry teacher provides students with the amount of potassium hydroxide they need in solution form. The teacher makes the solution by dissolving 42.1 g KOH into 3.0 L of solution.


Each lab group needs 0.023 mol of KOH for their experiment. How many milliliters of the solution does each group need to provide enough dissolved moles?

mL of solution

Answer :

Answer:

Do you need your 0.00 2 oz

Explanation:

Because that is the right answer

For the enough dissolving of given moles each group will need to provide 92mL of solution.

How we determine Molarity for further calculation?

Molarity can be calculated as: M = n/V mol/L where,

V = volume = 3L (given)

n = no. of moles, which can be calculated as:

n = W/M, where

W = given mass = 42.1g (given)

M = molar mass = 56.1g/mol (known)

First of all we have to calculate molarity to determine the volume of solution of each groups. By putting value of n in the 1st equation, molarity can be calculated as follow:

M = 42.1 / 56.1 × 3 = 0.250 mol/L

Now in the question it is given that each group have KOH solution of 0.023 moles. So, we can calculate the volume by using the 1st equation:

M = n/V

0.250 = 0.023/V

V = 0.023mol / 0.250mol per L = 0.092L = 92mL.

Hence, 92mL of the solution will each group need to provide enough dissolved moles

To learn more about molarity, visit the below link:

https://brainly.com/question/489225

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