'Hess law' presentation slideshows

AP Chapter 5

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Announcements

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CHEMISTRY 161 Chapter 6 www.chem.hawaii.edu/Bil301/welcome.html

CHEMISTRY 161 Chapter 6 www.chem.hawaii.edu/Bil301/welcome.html. THERMO DYNAMICS. HEAT. CHANGE. quantitative study of heat and energy changes of a system . CH 4 (g) + 2 O 2 (g) ? CO 2 (g) + 2 H 2 O(l). the state (condition) of a system is defined by T, p, n, V, E .

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THE REPORT RESULT OF EXPERIMENT HESS LAW

THE REPORT RESULT OF EXPERIMENT HESS LAW. BY MARCIA SRI PURWANTININGSIH. Hess Law. Aim Observe the enthalpy of reaction between NaOH solid and HCl solution with two ways . APPRATUS /CHEMICALS Apparatus: Beaker Glass 250 mL Thermometer Materials: NaOH solid

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Thermochemistry

Thermochemistry. Chapter 6!. By James Lauer and David Miron. 6.1 The Nature of Energy. Key Terms First law of thermodynamics - The energy of the universe is constant Energy - the capacity to do work or to produce heat

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Thermochemistry

Thermochemistry. Chapter 6!. By James Lauer and David Miron. 6.1 The Nature of Energy. Key Terms First law of thermodynamics - The energy of the universe is constant Energy - the capacity to do work or to produce heat

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5.1 Exothermic and endothermic reactions

5.1 Exothermic and endothermic reactions. If a reaction produces heat (increases the temperature of the surroundings) it is exothermic. If the temperature of the reaction mixture decreases (ie heat is absorbed) then the reaction is endothermic.

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Using Hess Law experimentally

Using Hess Law experimentally. 2KHCO 3 (s) ? K 2 CO 3 (s) + CO 2 (g) + H 2 O (l) This can not be found directly. Why ? How can Hess Law help ? ( Hint both KHCO 3 (s) and K 2 CO 3 (s) react with HCl (aq) hydrochloric acid to form KCl potassium chloride.).

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