Calorimeter Helper Handout

Calorimeter Helper Handout - H helper Handout WORK THE...

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H helper Handout WORK THE PROBLEMS IN THE TEXTBOOK! What do we mean by H / some unit? H’s are for chemical reactions not molecules – need to know what reaction! H is extensive – depends on amount Know what the sign means! Cases: 1) H in units of energy (J or kJ) and a reaction. Use the coefficients of the given chemical reaction with the H to determine the amount of energy required or released per mol. 2) H f or H f /mol (enthalpy of formation) for a compound – units are per mol of the product compound in the formation reaction. You should be able to write down the chemical reaction The coefficient in front of the product compound must be one You may have fractional coefficients in the balanced chemical reaction If you make X moles, you need to multiply H f /mol by X to get the total energy required. Be able to use with Hess’s Law to determine H’s for other chemical reaction. 3) Given
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This note was uploaded on 10/11/2011 for the course CHE 3433 taught by Professor Staff during the Fall '11 term at Oklahoma State.

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Calorimeter Helper Handout - H helper Handout WORK THE...

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