= following the Mg) from calorimetry if magnesium reacts with HCl steps (and sample problem 9.6) to calculate AH,n (in Mg(s)+ 2 HCI(aq)→M9CL,(aq) + H,(9) culate the moles of magnesium reacted if 5.00 g magnesium (MM = 05 g/mol) reacts completely with HCI ulate the heat of reaction (q in ]) if Mg reacts with ouah UCI

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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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8:50 PM Fri An
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Use the following the steps (and sample problem 9.6) to calculate AHn (in
kJ/mol Mg) from calorimetry if magnesium reacts with HCI
2.
Mg(s)+ 2 HCl(aq)¬M9CL,(aq) + H,(g)
Calculate the moles of magnesium reacted if 5.00 g magnesium (MM =
24.305 g/mol) reacts completely with HCl
a.
b. Calculate the heat of reaction (qa in J) if Mg reacts with enough HCl to make
a 500.0 g solution (cpsoln = 4.18 J/g°C) and raises the temperature from
20.00°C to 30.13°C using the equation below
т
solution
p,soln)
cal
Calculate the AHn (in J) using the following equation (be sure to include the
sign as + or -)
С.
rxn
ΔΗ
9rxn
a cal
rxn
d. Calculate the AHn (in kJ/mol Mg) by dividing the heat calculated in part c
by the number of moles of magnesium inpart a and converting to kJ
Page Break
Transcribed Image Text:8:50 PM Fri An 令29% Use the following the steps (and sample problem 9.6) to calculate AHn (in kJ/mol Mg) from calorimetry if magnesium reacts with HCI 2. Mg(s)+ 2 HCl(aq)¬M9CL,(aq) + H,(g) Calculate the moles of magnesium reacted if 5.00 g magnesium (MM = 24.305 g/mol) reacts completely with HCl a. b. Calculate the heat of reaction (qa in J) if Mg reacts with enough HCl to make a 500.0 g solution (cpsoln = 4.18 J/g°C) and raises the temperature from 20.00°C to 30.13°C using the equation below т solution p,soln) cal Calculate the AHn (in J) using the following equation (be sure to include the sign as + or -) С. rxn ΔΗ 9rxn a cal rxn d. Calculate the AHn (in kJ/mol Mg) by dividing the heat calculated in part c by the number of moles of magnesium inpart a and converting to kJ Page Break
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