enthalpy - 2024 ACF Fall - Buzzpoints App

Question

The energy change for gaseous ions to convert to a crystalline solid is the “lattice” version of this quantity. For 10 points each:

[10e] Name this thermodynamic quantity, symbolized H, that equals the sum of total energy and pressure times volume.

ANSWER: enthalpy

[10m] Enthalpy can be indirectly calculated according to this law, which states that the change in enthalpy of a reaction is independent of the order of its steps.

ANSWER: Hess’s Law

[10h] Hess’s law underlies a “cycle” named for Fritz Haber and this scientist that is used to calculate lattice enthalpy. This scientist and Oppenheimer name an approximation that involves treating the nucleus’s position as fixed.

ANSWER: Max Born [accept Born-Haber cycle or Born rule]

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Summary


2024 ACF Fall at Claremont Colleges	fall	Y	5	24.00	80%	80%	80%
2024 ACF Fall at Cornell	fall	Y	9	15.56	78%	33%	44%
2024 ACF Fall at Illinois	fall	Y	9	24.44	89%	67%	89%
2024 ACF Fall at Rutgers	fall	Y	8	16.25	88%	25%	50%
2024 ACF Fall at Ohio State	fall	Y	8	18.75	75%	75%	38%
2024 ACF Fall at Washington	fall	Y	6	16.67	67%	50%	50%
2024 ACF Fall at Georgia	fall	Y	11	17.27	82%	46%	46%
2024 ACF Fall at North Carolina	fall	Y	9	17.78	100%	33%	44%

Data


Claremont A	Claremont B	10	10	10	30
Claremont C	USC	10	10	10	30
UCLA B	UCLA A	0	0	0	0
UCLA D	UCLA C	10	10	10	30
UCLA E	UCSD	10	10	10	30
Binghamton A	Cornell G	10	10	0	20
U of Rochester A	Binghamton B	0	0	10	10
RIT B	Binghamton C	10	0	10	20
Cornell C	Penn State	10	10	10	30
Cornell D	RIT C	10	10	10	30
RIT A	Cornell E	10	0	0	10
Cornell A	ESF	0	0	0	0
Syracuse	Cornell B	10	0	0	10
Cornell F	U of Rochester B	10	0	0	10
Chicago A	SIUE	10	10	10	30
Chicago B	Iowa B	10	10	10	30
Illinois A	Purdue B	10	10	10	30
Illinois B	Notre Dame C	10	10	10	30
Purdue A	Illinois D	10	10	10	30
Notre Dame A	Indiana	10	0	10	20
Purdue C	Northwestern B	0	10	10	20
Notre Dame B	WashU A	10	0	10	20
Northwestern A	WashU B	10	0	0	10
Fordham A	Bard A	10	0	0	10
Rowan A	Lehigh B	0	0	0	0
Maryland A	Lehigh A	10	10	10	30
NYU B	Columbia B	10	10	10	30
Penn B	Maryland B	10	0	0	10
Columbia A	Princeton A	10	0	10	20
Rutgers A	NYU A	10	0	10	20
Rutgers B	Penn A	10	0	0	10
Michigan A	Miami A	10	10	10	30
Michigan State A	CWRU A	10	10	10	30
Miami B	Michigan State B	10	10	0	20
CWRU B	Ohio State A	10	10	10	30
CWRU C	West Virginia B	0	10	0	10
Michigan C	Miami C	0	0	0	0
Michigan D	Ohio State C	10	0	0	10
UW Gluttony	Arizona State B	10	10	0	20
UW Chastity	UBC B	10	10	10	30
UBC A	UW Envy	0	10	0	10
UW Greed	Arizona State A	0	0	0	0
UW Sloth	UW Lust	10	0	10	20
Boise State	UW Wrath	10	0	10	20
Ohio State B	Jefferson County Scholars	10	10	0	20
Auburn A	Clemson B	10	10	10	30
Auburn B	Vanderbilt A	10	0	0	10
Emory A	Belmont	10	0	0	10
Clemson A	Auburn C	0	0	0	0
Georgia Tech E	Furman	10	0	0	10
Georgia A	Georgia Tech A	0	0	0	0
South Carolina A	Emory Oxford	10	10	10	30
South Carolina B	Alabama A	10	0	10	20
Tennessee A	Southern	10	10	10	30
Georgia Tech C	Tennessee B	10	10	0	20
Georgia Tech D	Vanderbilt B	10	10	10	30
Liberty A	Appalachian State B	10	10	0	20
Appalachian State A	Duke B	10	0	0	10
NC State	James Madison A	10	0	0	10
UNC D	Liberty B	10	0	10	20
Liberty C	Virginia	10	10	0	20
VCU	Tusculum	10	10	10	30
UNC B	William & Mary	10	0	10	20
UNC C	James Madison B	10	0	10	20
Virginia Tech B	UNC A	10	0	0	10