Final answer:
Molarity (M) is represented as M1 in the dilution equation M1V1=M2V2, which is used to calculate concentrations before and after a solution is diluted. The equation ensures that the moles of solute remain constant, thus preserving the mass of the dissolved substance.
Step-by-step explanation:
Yes, molarity (M) is represented as M1 in the equation M1V1=M2V2, which is commonly referred to as the dilution equation. This equation shows the relationship between the concentrations and volumes before and after the dilution of a solution. Since the number of moles of solute remains constant during dilution, the product of molarity and volume (M×V) stays the same both before and after the process.
M1 refers to the initial molarity, V1 refers to the initial volume, M2 refers to the final molarity, and V2 refers to the final volume. To find the new molarity after dilution, you can rearrange the equation to solve for M2:
M2 = (M1 × V1) / V2
For example, if you have 100 mL of a 2.0 M HCl solution and you dilute it to 500 mL, you can find the new molarity M2 by using the dilution equation.
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