An approximately 0.1 M NAOH solution is made by adding 4.0 g of solid NaOH to...

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An approximately 0.1 M NAOH solution is made by adding 4.0 g of solid NaOH to 1000 ml of water. The precise concentration of the solution is determined by titrating the NaOH against portions of a weak acid, potassium acid phthalate (KHP) obtained from the National Bureau of Standards and certified as being 99.99% pure. The KHP samples are weighed by difference on a balance. How would the calculated NAOH concentration be affected (in comparison with the true concentration), if: (does it become greater, smaller, or unchanged) 1. The KHP was not dried prior to weighing? 2. The balance always read high, but in proportion to the weight recorded? An approximately 0.1 M NAOH solution is made by adding 4.0 g of solid NaOH to 1000 ml of water. The precise concentration of the solution is determined by titrating the NaOH against portions of a weak acid, potassium acid phthalate (KHP) obtained from the National Bureau of Standards and certified as being 99.99% pure. The KHP samples are weighed by difference on a balance. How would the calculated NAOH concentration be affected (in comparison with the true concentration), if: (does it become greater, smaller, or unchanged) 1. The KHP was not dried prior to weighing? 2. The balance always read high, but in proportion to the weight recorded?

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1 HIGHER than true If KHP is not completely dry then the actual mass of KHP ... View the full answer