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1. Mixture of saturated liquid and saturated vapor

Still confused... I am still not so understand. In a situation where the temperature of liquid is 60oc, and the boiling point of that liquid is 120oC. Can I concluded that the temperature is a pure liquid (not vapor exist)? So as long as the temperature of the liquid is below the boiling point...
2. Physical properties

metal will react with water in some situation, that is corrosion. Its the ionic reaction between metal, water and air. but the reaction is so slow, may be years. Generally, metal can consider does not react with water.
3. Mixture of saturated liquid and saturated vapor

In the figure that shows saturated vapor and liquid condition under varying temperature and specific volume (constant temperature), there are 2 lines, 1 is saturated liquid line, the other is saturated vapor line. so the region in between these 2 lines is called the mixture of saturated liquid...
4. Code ASTM D394-47(B)

Has anybody heard of this code, ASTM D394-47(B)? I can only find ASTM D394-59(1965) and it as already withdrawn at 1969. Thank you!
5. Neutralisation Cont'd

I solved for the heat of neutralization already, I thought, but now, I got the final temperature after reaction is 121.75 oC which I think is too big. I start with initial pH = 2 and final the conc H+ = 10^-(pH=2) then I find the mole by multipling the conc with the tank volume (400m3), the I...
6. Heat of dilution

Confused I would like to know the answer too. But from my previous calculation, I got 32.20 oC (If using del_H(96%) - del_H(infinite)), and 25.08 oC (If using del_H (96%) - del_H(10%)). From this website "[URL [Broken],[/URL] the answer is 33.70 oC. And I even run a test myself, and the...
7. Heat of Mixing & differential enthalpy of dilution

Source The heat of solution you can get it from Perry's Chemical Handbook or Elementary Principles of Chemical Process.
8. Neutralisation chemistry help

Problems Again I solved for the heat of neutralization already, I thought, but now, I got the final temperature after reaction is 121.75 oC which I think is too big. I start with initial pH = 2 and final the conc H+ = 10^-(pH=2) then I find the mole by multipling the conc with the tank...
9. Heat of Combustion

according to the rules in physics forum, we cant help those that didnt show their efforts. We are just guiding, not doing all the homework for you. you must at least show your way of calculations before we can help you.
10. Heat Transfer reaction

Sorry cant help according to the rules in physics forum, we cant help those that didnt show their efforts. We are just guiding, not doing all the homework for you. you must at least show your way of calculations before we can help you.
11. Heat of dilution

1 more question I solve the dilution of NaOH already. Thank you Bystander. 1 more question to ask, is this method suitable for all types of dilution? Like if I want dilute 96% sulphuric acid to 30% sulphuric acid? But I cant get a similiar answer to what I got from this website...
12. Heat of dilution

confused The Cp Value I used is 20% not 50%. About the del Hsoln, I didnt use del H 20% - del H 50% but instead, I used del H 20% - del H infinite, like what i learn from the book Elementary Principles of Chemical Process. Does this cause a difference? By the way, why you use this ratio...
13. Heat of dilution

The Cp Value I used is 20% not 50%. About the del Hsoln, I didnt use del H 20% - del H 50% but instead, I used del H 20% - del H infinite, like what i learn from the book Elementary Principles of Chemical Process. Does this cause a difference?
14. Chemical Reaction Between HF and H2O2

i mean whats the product if I mix these two things together...
15. Sand Filter

What I actually looking for is, do anybody have any data or tables or figures about the normal flux that run through the sand filter...
16. Chemical Reaction Between HF and H2O2

Can anyone tell me whats the reaction and product if I mix Hydrofluoric Acid (HF) and Hydrogen Peroxide (H2O2)??? HF + H2O2 = :confused:
17. Heat of dilution

Information For density and heat capacity, I obtained the value from Perry's Chemical Enginneers' Handbook according to % concentration and interpolation if I need to get the value in between. Value for delta_Hsolution I got it from Elementary Principles of Chemical Process, 3rd Edition...
18. Sand Filter

Do anybody have any informations on the flux of sand filter system?Varying flux in varying diameter?
19. Heat of dilution

I... I also want to show the calculations, but I just dont know why cant I upload the excel sheel, the system doesnt support. That's why! I also dont want to zip the file too, but the file size is too big to upload! I really ahve no idea how can i show my calculations! Please help me!
20. Can anyone help me solve this?

from the final neutralisation between NaOH and H2SO4, you should know hw many moles of H2SO4(excess) reacted with NaOH by using M1V1=M2V2 equation. then you deduct this number of moles of H2SO4 with the initial H2SO4, you will get the number of moles H2SO4 that reacted with NH3. From this you...
21. Heat of dilution

I have a problem here that troubles me for weeks. I was asked to calculate the final temperature if we dilute sodium hydroxide from initial concentration of 50% to final concentration of 2.1%. And also from intial 50% to final 20%. I got 2 answer that diffenrent a lot! 1 is 25.04 oC and the...
22. Neutralisation chemistry help

Thank you Thank you! I solve it already by assuming it's a strong acid and got the answer. Thank you!
23. Neutralisation chemistry help

can some one help me withe this? i want to neutralise a 400m3 of unknown solutions in pH 2 with sodium hydroxide. hw can i calculate the volume of alkaline needed? please help me!!!!!!!!!!!!!!!