1. The reaction shifted toward the product side.
2. If at the end of the reaction delta H is positive, the reaction is endothermic, because heat was absorbed. If delta H is negative, the reaction is exothermic because heat was lost.
3.
a. They are not soluble in water.
b. It turned pink because there was a decrease in the Chloride concentration.
c. There was a shift left, because there were less Chloride ions.
6. An open container (lower pressure) allows for more moles of gas to be released. So when a container of soda is opened, the bubbles will begin to be constantly released until they are out or the mixture.
Enrichment:
1. Carbon Dioxide
2.Left.
3.There is less.
4. Panting out of CO2 leads to an equilibrium which leads to taking CO2 from the CaCO3 which means thinner shells.
5. They could put the chickens in cooler rooms or environments.
Monday, April 16, 2012
Monday, April 2, 2012
Blog 9.1 Heat of Solution
Blog questions:
1. The Solution was endothermic because heat was absorbed, and the substance felt coder after the reaction.
2. The percent error for my experiment was 12%.
3. Possible sources of error were not exactly calculating 50 mL of water, or measuring too much or too little NH4Cl..
4a. The change would have been greater because some of the heat would have been lost to the surrounding air, and the total amount of heat lost would be greater
4b. The change would be less substantial because the concentration would be lower.
4c. The percent error would have been greater because the molarity would be greater.
Enrichment:
This is done to prevent cold temperature from damaging the oranges. When the trees are sprayed, the water will eventually freeze, ad absorb the harmful heat before the fruit is affected.
1. The Solution was endothermic because heat was absorbed, and the substance felt coder after the reaction.
2. The percent error for my experiment was 12%.
3. Possible sources of error were not exactly calculating 50 mL of water, or measuring too much or too little NH4Cl..
4a. The change would have been greater because some of the heat would have been lost to the surrounding air, and the total amount of heat lost would be greater
4b. The change would be less substantial because the concentration would be lower.
4c. The percent error would have been greater because the molarity would be greater.
Enrichment:
This is done to prevent cold temperature from damaging the oranges. When the trees are sprayed, the water will eventually freeze, ad absorb the harmful heat before the fruit is affected.
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