What is the maximum amount of KClO3 that will dissolve in 100g of water at 70ºC?

The maximum amount of KClO3 that will dissolve in 100g of water at 70 degrees Celsius is about 32 g/100 ml of water.

Solubility of a chemical is a function of temperature. Solubility curves can be prepared by simple experimentation. Solubility can also be calculated at any other temperature using the solubility curve.

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The solubility refers to the amount of substance that can be dissolved in a solvent. Generally, water is used as a standard solvent. On a case-by-case basis, though, another chemical may be used as a solvent.

The solubility of a substance in water is a function of the water's temperature. For some chemicals, the solubility increases gradually with temperature. For others, the substance's solubility increases rapidly with the same increase in the temperature.

In general, solubility curves are prepared by measuring the amount of a substance that can dissolve in water at a given temperature. This is then repeated over an entire range of temperatures. Ultimately, the data is plotted with the X-axis representing the temperature and the Y-axis representing the amount of substance dissolved per 100 g or 100 ml of water.

Using such a curve (an example can be found by using the attached link), we can see that the solubility of potassium chlorate (KClO3) is about 32 g/100 ml of water at 70 degrees Celsius. And hence we can say that (approximately) 32 g of potassium chlorate will dissolve in water at 70 degrees Celsius.

An interesting observation is a continuous increase in the solubility of potassium chlorate with temperature. At 0 degrees Celsius, the solubility is about 5 g/100 ml. At 100 degrees Celsius, the solubility is about 59 g/100 ml of water.

Hope this helps.

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