QUESTIONS: (a) Show that the equations given in the discussion section of this experiment in the lab manual for the reactions (6) and (8) can be added algebraically to give equation (7).

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter3: Equation, The Mole, And Chemical Formulas
Section: Chapter Questions
Problem 3.152QE
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QUESTIONS:
(a) Show that the equations given in the discussion section of this experiment in the lab manual
for the reactions (6) and (8) can be added algebraically to give equation (7).
) NOOH-Nat +0H
NA tOH tH +CI7H,0+Na'tci"
ombine your experimental AH values (AH, + AH) for the reactions in the same way as you
shoued the equations and compute AH for reaction (7) (i.e apply Hess's Law). This value
Transcribed Image Text:QUESTIONS: (a) Show that the equations given in the discussion section of this experiment in the lab manual for the reactions (6) and (8) can be added algebraically to give equation (7). ) NOOH-Nat +0H NA tOH tH +CI7H,0+Na'tci" ombine your experimental AH values (AH, + AH) for the reactions in the same way as you shoued the equations and compute AH for reaction (7) (i.e apply Hess's Law). This value
For this experiment the specific heat of all solutions can be taken as 4.184 Jg1°C1.To convert qre-
to a heat of reaction, AH, simply divide qreaction by the number of moles of the limiting reactant (if t"
is more than one reactant):
OL-
qreaction
(5)
= HV
moles of limitingreagent
The following three reactions will be studied in this experiment:
+ OH (aq)
(9) ®HV
NaOH(s) → Na* (aq)
(2) °HV
AH, (8)
NaOH(s) + H* (aq) + Cl (aq) → H2O« + Na* (aq) + Cl (aq)
Na* (aq)
+ OH (aq) + H* (aq)
+ Cl(ag) → H2O1 + Na*(aq) + Cl(aq)
(be)
163
Transcribed Image Text:For this experiment the specific heat of all solutions can be taken as 4.184 Jg1°C1.To convert qre- to a heat of reaction, AH, simply divide qreaction by the number of moles of the limiting reactant (if t" is more than one reactant): OL- qreaction (5) = HV moles of limitingreagent The following three reactions will be studied in this experiment: + OH (aq) (9) ®HV NaOH(s) → Na* (aq) (2) °HV AH, (8) NaOH(s) + H* (aq) + Cl (aq) → H2O« + Na* (aq) + Cl (aq) Na* (aq) + OH (aq) + H* (aq) + Cl(ag) → H2O1 + Na*(aq) + Cl(aq) (be) 163
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