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PART D: EFFECT OF TEMPERATURE As mentioned in Part B, aqueous Co²* ions appear red at room temperature. This red color is due to the presence of [Co(H,O)J*, which is known as a hexahy- drate since the metal ion has six water molecules coordinated to it. Interestingly, this cobalt hexahydrate can be converted to the dihydnate, which only has two water molecules coordinated to the cobalt ion. More importantly, the dihydrate appears a different color in solution. Rxn D.1: (Co(H,O)f*"(aq) = [Co(H,O)»F*(aq) + 4 H,O() 1. Perform Rxn D.1. Obtain a clean small 3" test tube, add about 20 drops (or I ml) of 1 M CoCl, to the tube and note its color on your report sheet. Then obtain a 250 mL beaker and use it to heat roughly 75 mL of tap water by use of a hot plate. Place the small test tube upright into the hot water without spilling its contents, and note any changes. Based on your observations, ex- plain if the reaction involved is exo- or endothermic.

PART D: EFFECT OF TEMPERATURE As mentioned in Part B, aqueous Co²* ions appear red at room temperature. This red color is due to the presence of [Co(H,O)J*, which is known as a hexahy- drate since the metal ion has six water molecules coordinated to it. Interestingly, this cobalt hexahydrate can be converted to the dihydnate, which only has two water molecules coordinated to the cobalt ion. More importantly, the dihydrate appears a different color in solution. Rxn D.1: (Co(H,O)f*"(aq) = [Co(H,O)»F*(aq) + 4 H,O() 1. Perform Rxn D.1. Obtain a clean small 3" test tube, add about 20 drops (or I ml) of 1 M CoCl, to the tube and note its color on your report sheet. Then obtain a 250 mL beaker and use it to heat roughly 75 mL of tap water by use of a hot plate. Place the small test tube upright into the hot water without spilling its contents, and note any changes. Based on your observations, ex- plain if the reaction involved is exo- or endothermic.

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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I just need to know if it is endothermic or exothermic?

PART D: EFFECT OF TEMPERATURE As mentioncd in Part B, aqucous Co²* ions appear red at room temperature. This red color is due to the presence of [Co(H,O)J*, which is known as a hexahy- drate since the metal ion has six water molccules coordinated to it. Interestingly, this cobalt hexahydrate can be converted to the dihydnate, which only has two water molecules coordinated to the cobalt ion. More importantly, the dihydrate appears a different color in solution. Rxn D.1: [Co(H,O)af*"(aq) =[Co(H,O)»F* (aq) + 4 H,O() 1. Perform Rxn D.1l. Obtain a clean small 3" test tube, add about 20 drops (or 1 mL) of 1 M CoCl, to the tube and note its color on your report sheet. Then obtain a 250 mL beaker and use it to heat roughly 75 mL of tap water by use of a hot plate. Place the small test tube upright into the hot water without spilling its contents, and note any changes. Bascd on your obscrvations, ex- plain if the reaction involved is exo- or endothermic. PART D: EFFECT OF TEMPERATURE REACTION D.1 Color of CoCl, solution prior to heating Color of solution after heating D.1 Equilibrium rxn cquation. Is the above rxn endothermic or exothermic? Explain.
Transcribed Image Text:PART D: EFFECT OF TEMPERATURE As mentioncd in Part B, aqucous Co²* ions appear red at room temperature. This red color is due to the presence of [Co(H,O)J*, which is known as a hexahy- drate since the metal ion has six water molccules coordinated to it. Interestingly, this cobalt hexahydrate can be converted to the dihydnate, which only has two water molecules coordinated to the cobalt ion. More importantly, the dihydrate appears a different color in solution. Rxn D.1: [Co(H,O)af*"(aq) =[Co(H,O)»F* (aq) + 4 H,O() 1. Perform Rxn D.1l. Obtain a clean small 3" test tube, add about 20 drops (or 1 mL) of 1 M CoCl, to the tube and note its color on your report sheet. Then obtain a 250 mL beaker and use it to heat roughly 75 mL of tap water by use of a hot plate. Place the small test tube upright into the hot water without spilling its contents, and note any changes. Bascd on your obscrvations, ex- plain if the reaction involved is exo- or endothermic. PART D: EFFECT OF TEMPERATURE REACTION D.1 Color of CoCl, solution prior to heating Color of solution after heating D.1 Equilibrium rxn cquation. Is the above rxn endothermic or exothermic? Explain.
Expert Solution
Introduction

At equilibrium, the rate of forward and that of   backward reactions for a reversible reaction will be the same.

The concentration of reactants and products remains unchanged in equilibrium.

If there occur any change in this equilibrium condition, the system itself tend to form another equilibrium by responding to these changes as per the Le Chatlier principle.

 

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