Pragyatested the solubility of three differenttemperaturesand collectedthe data as given below ( resultsare given inthe followingtable , as grams ofsubstancesdissolvedin 100gmof water to forma saturatedsolution )(a) What a massof Potassium nitratewould be neededto producea saturatedsolutionof potassiumNitratein 50gmof waterat 313k? ( b)Pragya makesa saturatedsolution of potassiumcholride in waterar 353Kand leaves the solutionto coolat room temperature. What would sheobserveas the solutioncools ? Explain . (c)Find the Solubilityof the eachsalt at 293KWhich salthas the Highestsolubilityat thistemperatures? (d)What is theeffectof change the temperatureon the solubility of a salt ?

Pragyatested the solubility of three differenttemperaturesand collecte

1.	Pragyatested the solubility of three differenttemperaturesand collectedthe data as given below ( resultsare given inthe followingtable , as grams ofsubstancesdissolvedin 100gmof water to forma saturatedsolution )(a) What a massof Potassium nitratewould be neededto producea saturatedsolutionof potassiumNitratein 50gmof waterat 313k? ( b)Pragya makesa saturatedsolution of potassiumcholride in waterar 353Kand leaves the solutionto coolat room temperature. What would sheobserveas the solutioncools ? Explain . (c)Find the Solubilityof the eachsalt at 293KWhich salthas the Highestsolubilityat thistemperatures? (d)What is theeffectof change the temperatureon the solubility of a salt ?
Answer» Solution : (a)`KNO_(3)` neededfor Saturatedsolutionat 313K , which isabout 62gm = `("620" xx" 50.)/100 = 31gm` (B)KCL on coolingto get Saturatedsolution . ( c)Solubility at 293K (i)PotassiumNitrate=32 gm (ii)SODIUM Cholride = 36gm (III)Potassium Chloride =35gm (iv) Ammonium Chloride = 37gm Ammonium Cholride , solubility is more thanat this tempearture ( solubility increaseswithincrease in temperature ) (d)Rate of Solubility increses withincrease in Temperature.