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anonymous
 one year ago
A solution is made by dissolving 4.0 moles of sodium chloride (NaCl) in 2.05 kilograms of water. If the molal boiling point constant for water (Kb) is 0.51 °C/m, what would be the boiling point of this solution? Show all of the work needed to solve this problem
anonymous
 one year ago
A solution is made by dissolving 4.0 moles of sodium chloride (NaCl) in 2.05 kilograms of water. If the molal boiling point constant for water (Kb) is 0.51 °C/m, what would be the boiling point of this solution? Show all of the work needed to solve this problem

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Photon336 please help

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1So our first step is to determine how many moles of NaOH we have per kilogram of water m=4.0 moles/2.05kg m=?

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1@lovingod786 ??

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Yes it would be 1.95 but it would be moles/kg

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1So our next step is to find our van't Hoff factor which is represented by i

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0que? Mind speaking english lol

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1This factor is a constant associated with the dissociation of the solute in the solvent

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1So NaCl breaks down into two ions Na+ and Cl meaning that our i value is 2 (keep in mind that it changes for each reaction)

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Last step now! We have a formula which is T=iKbm T is your change in temperature, i is 2 as found in second step, Kb is given 0.51 and m is what we found in the first step

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so T= (2)(0.51)(1.95) = 1.989 mol/kg yes?

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Yes so the change in temperature is 1.989 (note it's not in mol/kg anymore it is degrees celcius now) to find the boiling point you add this number to the boiling point of water

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1The boiling point for water is 100 C so you would add that to the 1.989 the 0.51 is just a constant. For boiling point with water involved you add to 100. If you are doing freezing point with water then you would subtract from zero since 0 is the freezing point.

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1101.989 celcius would be the boiling point

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So thats the answer?

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Yes that would be your answer for the boiling point

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i got another question would you like to help

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.1Of course I can help, start a new post though so I can find everything easier please!
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