# Calculate the molarity of NaOH if 25.0 mL of a 0.250 M solution of NaOh is diluted to 100.0 mL

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Dilution is the process of reducing the concentration of chemical species of a specific solution. Generally, solvent in added in the system to increase the volume thus decreasing the concentration.

The general equation for dilution can be expressed as:

`M_1V_1 = M_2V_2`

where:

`M_1 = 0.250`

`V_1 = 25.0 mL = 0.025 L`

`M_2 = ?`

`V_2 = 100 mL = 0.1 L`

Then we solve for M2:

`M_1V_1 = M_2V_2`

`(0.250)*(0.025) = M_2*(0.1)`

`M_2 = ((0.250)*(0.025))/(0.1)`

`M_2 ` = 0.625 M

Note: 1000mL = 1L