Chemistry

The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.187 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.5°C, what is the minimum temperature reached by the solution? [specific heat of water = 4.18 J/g°C; heat capacity of the calorimeter = 365. J/°C]

  1. 0
  2. 0
  3. 121
asked by Chris
  1. The sum of heats gained is zero.

    heatgainedwater+heataddedtoNH3Cl=0

    65g*cwater*(Tf-26.5)+6.187/molmass*15.2kj/mol=0

    now, change c water to Kj/g to make units work out (kJ)
    cwater=.004kJ/gC

    and that ought to let you work out what is tf.

    1. 0
    2. 0
    posted by bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. CHM 152

    At 20oC, a 2.32 M aqueous solution of Ammonium Chloride has a density of 1.0344g/ml. WHat is the molality of Ammonium Chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol?? I am not sure how to incorporate the

    asked by Car on June 11, 2010
  2. Chemistry

    When ammonium chloride is dissolved in water, the solution becomes colder. What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration? Why does the solution form? What

    asked by Samantha on September 21, 2010
  3. Chemical

    The molar enthalpy of solution for ammonium chloride is 14.8kJ/mol. What is the final temperature observed when 20.0g of ammonium chloride is added to 125mL water at 20.0'C?

    asked by Han on September 14, 2014
  4. Chemistry

    When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8°C to 20.1°C. What is the energy of dissolution of NH4Cl per mole? (The molecular mass of NH4Cl = 53.49 g/mol, and

    asked by Morgan on December 11, 2014
  5. chemistry

    When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8°C to 20.1°C. What is the energy of dissolution of NH4Cl per mole? (The molecular mass of NH4Cl = 53.49 g/mol, and

    asked by Morgan on December 11, 2014
  6. Chemistry

    A cold pack manufacturer has decided to change the chemical in their cold pack from ammonium nitrate to ammonium chloride, a safer chemical. The original cold pack formulation used 100.0g of room temperature (27.0C) water and 35 g

    asked by Bob on November 3, 2016
  7. Chemistry

    You want to determine the heat of reaction when a sodium chloride solution is formed using a 10.0 g sample of NaCl(s) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the

    asked by Morgan on February 18, 2015
  8. Chemistry

    You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of

    asked by Neha on July 14, 2011
  9. Chemistry

    calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride

    asked by Amy on March 29, 2015
  10. Grade 11 Chemistry

    calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride

    asked by Sim on March 29, 2015

More Similar Questions