18 Garv tested the solubility of four substances A, B, C and D at different temperatures and collected the following data. (Solubility refers to the amount of solute in grams dissolved in 100g of water to give a saturated solution) Substance dissolved Temperature in Kelvin 290K 313K 323K 343K 353K Solubility X 22, 34, 40, 93 ,109 Y 43, 43, 43, 50 ,50 Z 27 ,30 ,34, 37 ,40 T 25, 38, 42, 54 ,64 i) Which salt has the lowest solubility at 323K? ii) A student prepared a saturated solution of X at 323K and then added 25g water to it. What mass of X must be added to again make the solution saturated? iii) The solubility of which salt is least affected by increase in temperature? iv) What mass of T would be required to make 200g of saturated solution at 290K?
Answers
Explanation:
18 Garv tested the solubility of four substances A, B, C and D at different temperatures and collected the following data. (Solubility refers to the amount of solute in grams dissolved in 100g of water to give a saturated solution) Substance dissolved Temperature in Kelvin 290K 313K 323K 343K 353K Solubility X 22, 34, 40, 93 ,109 Y 43, 43, 43, 50 ,50 Z 27 ,30 ,34, 37 ,40 T 25, 38, 42, 54 ,64 i) Which salt has the lowest solubility at 323K? ii) A student prepared a saturated solution of X at 323K and then added 25g water to it. What mass of X must be added to again make the solution saturated? iii) The solubility of which salt is least affected by increase in temperature? iv) What mass of T would be required to make 200g of saturated solution at 290K?