I Need Help With This Question {chemistry} - Education - Nairaland
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| I Need Help With This Question {chemistry} by JABAIDO(op): 11:15pm On Dec 10, 2019 |
Good evening here. Pertinent to the topic, please I need anyone who knows how to go about the question below to help me with the working and answer: "Some students added 4g of NaOH to 100ml of water in a practical class using a calorimeter for the experiment. After the addition, the temperature of the solution rose by 20°C and the specific heat capacity of water is 4.18kj/g/°C. Determine the molar enthalpy of solution" I shall be appreciative  � |
| Re: I Need Help With This Question {chemistry} by GLYMAN: 12:54am On Dec 11, 2019 |
ANSWER=0.836MkJ/g 1 Like 1 Share |
| Re: I Need Help With This Question {chemistry} by JABAIDO(op): 3:07am On Dec 11, 2019 |
GLYMAN:Thanks sir. Could you display the working sir? 1 Like 1 Share |
| Re: I Need Help With This Question {chemistry} by JABAIDO(op): 8:38am On Dec 11, 2019 |
Pls, if you come across this and you know how to solve it, I take God beg you spare me few minutes of your time. I need the working urgently.... |
| Re: I Need Help With This Question {chemistry} by GLYMAN: 12:38pm On Dec 11, 2019 |
4g of NaOH to 100ml of water---convert to mol/dm3 NaOH=40g/mol 100ml=0.1dm3 4 divided by 40 times 0.1=0.01mol/dm3 Molar enthalpy of solution =Molarity X specific heat capacity X change in temperature=0.01 X 4.18 X 20 Mind the units |
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