Chemistry
Find the solubility of KNO3 at 20°C when the mass of the empty dish is 50 g. The mass of dish and solution is 65 g, while the mass of dish and residue is 54.3 g.
Related Questions
4 litres of an organic compound, acetone, is present in 90 litres of an aqueous solution. Calculate its volume percent.
The following table gives the solubility of different salts at different temperatures.
Temperature (in K) Substance dissolved (in g) KNO3 NaCl KCl NH4Cl 283 21 36 35 24 293 32 36 35 37 313 62 36 40 41 333 106 37 46 55 353 167 37 54 66 Answer the following questions based on the table given above.
(a) What mass of KNO3 would be needed to produce a saturated solution of KNO3 in 50 grams of water at 313 K.
(b) If a saturated solution of KCl is made at 353 K and then cooled at room temperature, what would you observe? Explain.
(c) Find the solubility of each salt at 293 K.
(d) Which salt has the lowest solubility at 283 K?
(e) What is the effect of change of temperature on the solubility of a salt.
What weight of sodium nitrate will separate when a saturated solution containing 50 gram of water is cooled from 50°C to 30°C ? The solubility of NaNO3 at 50°C and 30°C is 114 g and 86 g respectively.
To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.