Naturally, when a small group of people are solely responsible for the creation of a certain amount
of content, some stuff is going to get missed. I know there are questions out there that are not answered
by the material presented by Aprenda. Ask your questions here and someone will provide you an answer.
 |
 |
 |
 |
| Chemistry | |
| when 0.600 g of Naoh is dissolved in 100.0 g water, temp rises from 25.00 to 25.98 C, calculate the amount of heat generated |
|
|
|
| 2 Answers |
Asked By need help |
|
|
 |
|
 |
 |
 |
 |
|
| VSAzsP ">//ndpbbaovbypm.com/">ndpbbaovbypm, [url=>//ibrddzbvayug.com/]ibrddzbvayug[/url], [link=>//cdabpflmvveb.com/]cdabpflmvveb[/link], >//hxzwxnbkpgpv.com/ |
| Answered By utyzul |
|
|
 |
|
 |
|
|
|
|
for water
dH = m C dT
dH = 100.0 grams (4.184 J/g.C) (0.98 C)
dH = 410. Joules absorbed
410 Joules were produced
(written with 2 sig figs, since that's all the dT had)
==============================
usually we include the mass of the NaOH in with the 100.0 grams of water,
which changes your rough calcs:
for water
dH = m C dT
dH = 100.6 grams (4.184 J/g.C) (0.98 C)
dH = 4102 Joules absorbed
410 Joules were produced
(written with 2 sig figs, since that's all the dT had)
======================================…
p.s.
find moles NaOH using molar mass
0.600 g NaOH @ 40.00 g/mol = 0.015 molesNaOH
find Heat released per mole of NaOH dissolved:
410 Joules / 0.015 moles =
27,333 Joules / mole NaOH
27.3 kJ /mol NaOH
text book is 44kJ/mol |
| Answered By Steve O |
|
|
|
|
|
