Question

a 763 of 0 F 90
-63*100
90​

Answer 1

Answer:

In fact since NaOH you obtain as solid pellets or any other solid types, are not standard materials nor they are pure. Usually solid NaOH contains some carbonates

due its reaction with CO2 and moisture from air. Therefore the solution prepared by dissolving 60 g NaOH in 100 g H2O is only approximately 60% and containing some carbonates too, means, not a pure solution of NaOH. You must also be aware that this quantity of 60 g NaOH can only dissolve in 100 g of H2O over 10 deg.C, according to the excellent table given thankfully by Mushtaq Ahmad. To prepare Carbonate Free NaOH, please see, Vogel's Textbook of Quantitative Chemical Analysis, 5th.Ed.1989, page 289; Thank You and Good Luck

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