So i have 1.5g of a solid which is a mixture of sodium chloride and sodium hydroxide, but i only want the mass of the sodium chloride in the solid. How do i find it?
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If they are in a one solid mass, I assume they are mixed at the molecular level. So there is no way to separate them physically to just weigh out the mass of one. You would need to put the solid, or some weighed portion, into solution and titrate the NaOH with a standard acid. The NaCl will not affect the reaction. You will need to convert the moles of OH- you find to weight of NaOH by multiplying the moles times the molecular weight of NaOH (40 g/mole).