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Title: Fractional Crystallization Post by: Unknown95 on Sep 15, 2014 determine the number of grams of water which are required to dissolve a mixture of 25g of KNO3 and 2.0g of CuSO45H2O at 100 Celsius
Title: Re: Fractional Crystallization Post by: skip5284 on Sep 16, 2014 Content hidden
Title: Re: Fractional Crystallization Post by: Unknown95 on Sep 20, 2014 1a. the number of grams of KNO3, which dissolve in 100g of H2O at 100 Celsius was 240g
1b. the number of grams of water which are required todissolve 25g of KNO3 at 100 Celsius is 10.4g 1c. the number of grams of water which are required to dissolve 2.0g of CuSO4 5H2O is 1.1g 1d. the number of gramsof wate which are required to dissolve a mixture of 25g of KNO3 and 2.0g of CuSO4 5H2O at 100 Celsius is11.5g thx for helping me on that part the question i have now is it says take the solution to problem 1d, add 10 mL of deionized water, and cool the solution to 0 Celsius. 2a. How much KNO3 remains in solution? (For this one, do i change 10ml to grams which is 10g, then add to the amount in 1d which becomes 21.5g. Cooling KNO3 to 0 Celsius is 10g/100g H2O, then i have no clue after this) 2b. How much KNO3 crystallizes out? i don't know what this is asking for 2c. How much CuSO4 5H2O crystallizes out? i don't know what this is asking ofr either but at 0 Celcius that is around 20g/100g H2O, i suppose i have to repeat the step similar to problem 2a to get what 2c is but i don't know what else to do 2d. What percentage of KNO3 is recovered from the original 25 grams? Title: Re: Fractional Crystallization Post by: JayRana730 on Sep 22, 2014 Did anyone get this answer yet?
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