5 g of NaOH was dissolved in deionized water to prepare a 450 mL stock solution. What volume (in mL) of this solution would be required to prepare 500 mL of 0.1 M solution?

Given: Molar Mass of Na, O

Question

5 g of NaOH was dissolved in deionized water to prepare a 450 mL stock solution. What volume (in mL) of this solution would be required to prepare 500 mL of 0.1 M solution?

Given: Molar Mass of Na, O and H is 23, 16 and 1 g mol⁻¹ respectively

Canvas Classes · Accepted Answer

🧠 Dilution Problem —  After You Find

This is a two-stage problem. First, find the molarity of the stock solution from the mass of  given. Then use the dilution law to find the volume needed to make the diluted solution. Whenever you see two volumes and two molarities (one of each known) in the same question, your reflex should be the dilution formula:

This formula works because moles of solute are conserved during dilution — adding water does not create or destroy solute molecules.

🗺️ Wo

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