could-you-use-ethanol-instead-of-water-in-a-calorimetry-experiment-explain-2

Name: could you use ethanol instead of water in a calorimetry experiment explain 2
Uploaded: 2020-10-18
Duration: 2 min 18 s
Channel: Numerade
Description: Could you use ethanol instead of water in a calorimetry experiment? Explain.

Question

Could you use ethanol instead of water in a calorimetry experiment? Explain.

David Collins · Accepted Answer

question. Number three is also a conceptual question associated with Kalorama Tree. So we&#x27;ll go back to the same diagram that we were referring to for questions one and two. To answer this question, the question asks whether or not you could use ethanol instead of water in a calorie mitri experiment. So they&#x27;re suggesting that instead of having this be water that we have in here. Ethanol Ethanol, of course, has a couple characteristics different from water that might be concerning. One is it&#x27;s flammable. Another is. It is very volatile, which means that it can easily evaporate. So in order to measure the heat transferred by the combustion of the object inside of the container to the ethanol, we need to know the specific heat of ethanol, the mass of ethanol and the change in temperature of ethanol. It&#x27;s probably unlikely that the heat is going to be hot enough to cause ethanol itself to combust. So the fact that methanol is or ethanol is flammable is probably not a big concern. We could look up the specific heat of ethanol just like we could look up the specific heat of water, so that&#x27;s really not a concern either we could measure the change in temperature of ethanol, just like we could measure the change in temperature of water, so that&#x27;s probably not a concern. But the fact that ethanol is volatile means the mass could change if the ethanol gets warm enough and begins to turn into the gas phase. Also, ethanol, because it&#x27;s more volatile, will boil at lower temperatures than water. So these would be the concerns that I would have in using ethanol is that it&#x27;s more volatile. And because of that, the mass might change through evaporation more significantly than water. And you&#x27;re not going to be able to go to US high of temperatures because ethanol boils at lower temperatures than water does.

David Collins · Answer

The question is, could an endo thermic reaction We used to measure the heat capacity of the calorie motor? And the answer is yes. A calorie meter will absorb or lose energy according to its heat capacity. Still, in most cases, an excellent thermic reaction is used, and we measure the heat capacity of a calorie meter by the temperature change Uh, which is an increase in temperature because of the excellent Emmick process. However, heat capacity can be measured by monitoring the heat gained or lost, or the heat resulting in an increase in temperature or a decrease in temperature of the Kalorama Turner. Heat capacity in general describes the change in temperature as a function of the absorption of heat or the loss of heat. It doesn&#x27;t matter.

Jorge Villanueva · Answer

I&#x27;m changing. Going over questions for you. Fine with practice, Barton. So ethanol siege three. And because it has no each group, the order will Being able to more. There is cooler methanol is pulumur. So since Frank his own slide. Okay, ethanol wound is off. I mean, a polar compound suggest

Charotte Mcadam · Answer

using a reaction off the siren and water. We&#x27;ve got the reaction up on the screen of age to see double bond C H two at H 20 which gives us C H three c h 20 H and the gay c&#x27;est phone on which issues ING bond dissociation energies in order to estimate and will be changed in this reaction. Then we can calculate the value obtained to the value calculated from anti peace off formation. So using bond association and will be data doubt Rh is approximately negative. 44 Kelly jewels, part mull and then, using our Delta F H data, we got a Delta R H value off negative 45.9 killer jewels Permal. So those values are very close.

Eugene Schneider · Answer

So in this problem, we want to find the Delta h of reaction off ethanol ch three c h two o h gas plus three o two gas forming to co two gas plus three h two o gas. And so the way we do this is used bond, mental peace, and so adult age of reaction is going to be the sum off the Delta H is of bonds formed or I&#x27;m sorry. Bond&#x27;s broken minus. The sum of Delta H is of bonds formed. And so the way we can determine this is just add up all the broken bonds and add up all the foreign bonds and then subtract one from the other. And so, if we start with our broken bonds were breaking five ch bonds from our ethanol also from our ethanol. We&#x27;re breaking one C C bond. We&#x27;re breaking one CEO Bond and one O. H Bond. And then from R O. Two were breaking three o double bonds. And then we subtract our bonds formed, which were forming for CEO double bonds, two from each of our CEO twos. And then we&#x27;LL also subtract our six o h single bonds that were forming from two from each of our age. Two o&#x27;s. And so I will go to the next page and plug in all of these numbers and these air just the standard bond mental peace of formation for these bonds and so will begin with thesame off the Delta H is of bond&#x27;s broken, and that will give us five times thie ch Bond, which is for fourteen Killa Jules Pramono plus, uh, wanna times the CC single bond three forty seven killer Jules Pramono and then plus one times the C o single bond three sixty killa jewels for more plus one times thie Ohh! Single bond for sixty four killer Jules per mon and then plus three times the O o double bond, which is for ninety eight Gila jewels from all. And then we add all those together that gives us forty seven thirty five killer Jules Permal. And so now we conduce o r sum of the Delta H is off bonds formed and we want these to be negative. And so we&#x27;LL subtract four times the C o double bond, which is seven ninety nine killer Jules per mall and then subtract six times the H single bond for sixty four Killa Jules Permal. And that gives us negative. Fifty nine eighty Killa Jules Permal. And so now, to find the Delta h of reaction, we take our bonds broken are forced forty seven thirty five killer Jules Permal and subtract our fifty nine eighty killer Jules per mall for bonds formed and we get adult age of reaction off Negative twelve hundred forty five. Kill a Jules per mall, and that is our final answer.

Ronald Prasad · Answer

Let&#x27;s calculate the morality at these two temperatures. First of all, at, uh, 15 degrees Celsius, we can calculate the mouse is the volume times the density, and we&#x27;re told that we have 100 milliliters and the density at 15 degrees Celsius is 0.9831 grams per milliliter, and this would be equal to 98.31 grams. We&#x27;re told that we have a 10% solution. So in a 10% solution, be mass of the saw Utes is going to be 9.831 grams and exactly the, um, polarity of the solution and, uh, which is the Siege three. Siege to each and so be moles, 9.831 grams and Mohler Mouse of Ethanol, 46.0 grams per mole, divided by the volume, which will be 0.100 leaders. And we find that the malaria the works of 22.137 Moeller on. We&#x27;ll do a similar calculation at 25 degrees Celsius in the mass physical volume times density volume is the same and density is 0.9804 Grants for mill leader on this should be mill leaders here, and this would be equal to 98.4 grams. So in a 10% solution, the mass of the Saw Utes is equal to 9.804 grams. Therefore, let&#x27;s all for the polarity of the ethanol once again, which is 9.804 grams convert moles and divided by the volume. And at 25 degrees Celsius, the polarity works out to be 2.131 Moeller. So we can see here that the polarities air different. So, uh, the the last part of this, um, does similarity different? The two temperatures, the polarity, uh, at 15 degrees Celsius and 25 degrees Celsius is different. Indicating that polarity, um um depends on the temperature. So it is temperature dependent, just like how density is temperature dependent.

Problem

The experimental value for the Calorie content of…

Problem 3 Easy Difficulty

Could you use ethanol instead of water in a calorimetry experiment? Explain.

Answer

Yes we can use ethanol too in calorimetry. For this we need to know specific heat of ethanol and proceed for calculations according to that only.

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Yes we can use ethanol too in calorimetry. For this we need to know specific heat of ethanol and proceed for calculations according to that only.

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Stephanie C.

Lizabeth T.

Karli S.

Jacquelin H.

Liquids - Intro

Comparison Of Gases Liquids And Solids

Angelica M. StacyLiving by Chemistry

Stephanie C.

Lizabeth T.

Karli S.

Jacquelin H.

Angelica M. Stacy

Living by Chemistry