How many milliliters of a 4.0 m nacl solution will be needed to make 500 ml of a 2.0 m nacl solution?

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01-01-2018
Chemistry

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How many milliliters of a 4.0 m nacl solution will be needed to make 500 ml of a 2.0 m nacl solution?

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Kalahira Kalahira · Answer 1 · 2018-01-12T13:48:31+01:00

Kalahira Kalahira

12-01-2018

The number of moles = volume * molarity.
Volume = 500/1000 of Nacl solution.
Volume = 0.5 of Nacl
Hence number of moles = 0.5 * 2 = 1.
To calculate how many milliliters of a 4.0 m nacl solution.
We have number of moles = volume * molarity.
Hence volume = number of moles /molarity
Volume = 1 / 4 = 0.25L = 2500mL

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