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the solubility of ammonium chloride ...

the solubility of ammonium chloride in water at various temperature is given below :
`{:("temperature ",:,10^(@)C,20^(@)C,40^(@)C,60^(@)C,80^(@)C),("solubility",:,24g,37g,41g,55g,66g):}`
what mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at `40^(@) C `?

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The correct Answer is:
20.5 g
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Rama tested the solubility of four substances at different temperatures and found in grams of each substance dissolved in 100 g of water to form a saturated solution. {:(,"Substance dissolved",,"Temperature (K)",),(,"(in grams)","293 K","313 K","333 K"),(1.,"Ammonium chloride","37 g","41 g","55 g"),(2.,"Potassium chloride","35 g","40 g","46 g"),(3.,"Sodium chloride","36 g","36 g","37 g"),(4.,"Potassium nitrate","32 g","62 g","106 g"):} (i) Which substance is least soluble at 293 K. (ii) Which substance shows maximum change in its solubility when the temperture is raised from 293 K to 313 K ? (iii) Find the amount of ammonium chloride that will separate out when 55 g of its solution at 333 K is cooled to 293 K. (iv) What is the effect of temperature on the solubility of a salt ? (v) What mass of sodium chloride would be needed to make a saturated solution in 10 g of water at 293 K ?

LAKHMIR SINGH & MANJIT KAUR-IS MATTER AROUND US PURE -Exercise
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