Answer:
78.87 liters of bromine gas at 300 °C and 735 Torr are formed.
Explanation:
![5NaBr+NaBrO_3 +3H_2SO_4\rightarrow3Br_2+3Na_2SO_4+3H_2O](https://tex.z-dn.net/?f=5NaBr%2BNaBrO_3%20%2B3H_2SO_4%5Crightarrow%3C%2Fp%3E%3Cp%3E3Br_2%2B3Na_2SO_4%2B3H_2O%3C%2Fp%3E%3Cp%3E)
Moles of sodium bromide = ![\frac{275 g}{103 g/mol}=2.6699 mol](https://tex.z-dn.net/?f=%5Cfrac%7B275%20g%7D%7B103%20g%2Fmol%7D%3D2.6699%20mol)
Moles of sodium bromate =![\frac{176 g}{151 g/mol}=1.1655 mol](https://tex.z-dn.net/?f=%5Cfrac%7B176%20g%7D%7B151%20g%2Fmol%7D%3D1.1655%20mol)
According to reaction , 1 mol of sodium bromate reacts with 5 moles of sodium bromide. Then 1.1655 mol of sodium bromate will react with:
of sodium bromide.
This means that sodium bromide is in limiting amount the amount of bromine gas depends upon sodium bromide.
According to reaction 5 moles of sodium bromide gives 3 moles of bromine gas.
Then 2.6699 moles of sodium bromide will give:
of bromine gas
Volume occupied by bromine gas at 300 °C and 735 Torr.
Pressure of the gas = P =735 Torr = 0.9555 atm
Temperature of the gas = T = 300°C = 573 K
n = 1.60194 mol
![PV=nRT](https://tex.z-dn.net/?f=PV%3DnRT)
![V=\frac{1.60194 mol\times 0.0821 atm L/ mol K\times 573 K}{0.9555atm}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B1.60194%20mol%5Ctimes%200.0821%20atm%20L%2F%20mol%20K%5Ctimes%20573%20K%7D%7B0.9555atm%7D)
V = 78.87 L
78.87 liters of bromine gas at 300 °C and 735 Torr are formed.
Percent yield is calculated using:
![percent \: yield = \frac{actual \: yield}{theoretical \: yield} \times 100\%](https://tex.z-dn.net/?f=percent%20%5C%3A%20yield%20%3D%20%20%5Cfrac%7Bactual%20%5C%3A%20yield%7D%7Btheoretical%20%5C%3A%20yield%7D%20%20%20%5Ctimes%20100%5C%25)
Your actual yield is how much you actually had at the end of the experiment = 79g.
Your theoretical yield is how much you calculated you should have gotten in an ideal, perfect experiment = 104g.
So put those values into the equation:
Vibrating around fixed positions
This one is from G_oogle
The Milkmaid and Her Pail
A farmer's daughter had been out to milk the cows, and was returning to the dairy carrying her pail of milk upon her head. As she walked along, she fell a-musing after this fashion: "The milk in this pail will provide me with cream, which I will make into butter and take to market to sell. With the money I will buy a number of eggs, and these, when hatched, will produce chickens, and by and by I shall have quite a large poultry-yard. Then I shall sell some of my fowls, and with the money which they will bring in I will buy myself a new gown, which I shall wear when I go to the fair; and all the young fellows will admire it, and come and make love to me, but I shall toss my head and have nothing to say to them." Forgetting all about the pail, and suiting the action to the word, she tossed her head. Down went the pail, all the milk was spilled, and all her fine castles in the air vanished in a moment!
- Do not count your chickens before they are hatched.
I tried to make my own but it turned out bad...
Hope this helps ❤️