The oxidation of copper(i) oxide cu2o

The oxidation of copper(I) oxide,
Cu2O(s), to copper(II) oxide, CuO(s), is an exothermic
process,
The oxidation of copper(I) ,
Cu2O(s), to copper(II) oxide, CuO(s), is an exothermic
process,
2 CuO2(s) + 02(g) —> 4 CuO (s)
2 CuO2(s) + 02(g) —> 4 CuO (s)
The change in enthalpy upon reaction of 67.68 g of CuO (s) is
-69.06 kJ
The change in enthalpy upon reaction of 67.68 g of CuO (s) is
-69.06 kJ

Calculate the work, w, and the energy change, delta Urxn, when
67.68 g of Cu2O (s) is oxidized at constant pressure of 1.00 bar
and a constant temperature of 25 degree celcius?
Calculate the work, w, and the energy change, delta Urxn, when
67.68 g of Cu2O (s) is oxidized at constant pressure of 1.00 bar
and a constant temperature of 25 degree celcius?
(the two answer must be in kJ)
(the two answer must be in kJ)

I can’t get the right answer for some reason.
I can’t get the right answer for some reason.
Thank you.
Thank you.
Show work please.

Also Read :   Correctly identify this tissue type and then label the features of the tissue

Show work please.

classmAte Date Page Mo 143-) PAo eik ニー587-18 /Tou
The balanced chemical reaction is :
2Cu2O (s) + O2 (g) ————-> 4CuO
(s)
given that 67.68 g of Cu2O is reacted i.e.
number of moles of Cu2O reacted = 67.68 g / 143.1 g
mol-1 = 0.473 mol
The stoichiometry of the balanced equation tells that each 2 mol
of Cu2O reacts with 1 mole of O2
therefore;
number of moles of O2 reacted = 0.473 / 2 = 0.24
mol
Now,
change in number of moles (Δn) of the compound in the gaseous
state in the reaction is :
Δn = nproducts (g) – nreactants(g)

= 0 – 0.24
= -0.24
and work done in chemical reaction given by
w = – ΔnRT
= – (-0.24 mol) * 8.314 J K-1 mol-1 * 298
K
= 594.62 J
~= 0.594 kJ which is actually expansion (compression) work
(-PΔV)
positive sign indicates that work is done on the system.
Also, ΔH = ΔU + Δ(PV)
at constant pressure,
ΔH = ΔU + PΔV
=> ΔU = ΔH – PΔV
= -69.06 – 0.59
~= -69.65 kJ
The oxidation of copper(I) oxide,
Cu2O(s), to copper(II) oxide, CuO(s), is an exothermic
process,

2 CuO2(s) + 02(g) ---> 4 CuO (s)</p>
<div style="clear:both; margin-top:0em; margin-bottom:1em;"><a href="https://answerprime.com/what-songs-have-the-name-tom-in-them-2/" target="_blank" rel="dofollow" class="u70a621c7af52f583e50efbb01b88a209"><!-- INLINE RELATED POSTS 2/3 //--><style> .u70a621c7af52f583e50efbb01b88a209 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#FFFFFF; border:0!important; border-left:4px solid #FFFFFF!important; text-decoration:none; } .u70a621c7af52f583e50efbb01b88a209:active, .u70a621c7af52f583e50efbb01b88a209:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u70a621c7af52f583e50efbb01b88a209 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u70a621c7af52f583e50efbb01b88a209 .ctaText { font-weight:bold; color:#2C3E50; text-decoration:none; font-size: 16px; } .u70a621c7af52f583e50efbb01b88a209 .postTitle { color:#141414; text-decoration: underline!important; font-size: 16px; } .u70a621c7af52f583e50efbb01b88a209:hover .postTitle { text-decoration: underline!important; } </style><div style="padding-left:1em; padding-right:1em;"><span class="ctaText">Also Read : </span>  <span class="postTitle">What songs have the name Tom in them?</span></div></a></div><p>The change in enthalpy upon reaction of 67.68 g of CuO (s) is<br />
-69.06 kJ</p>
<p>Calculate the work, w, and the energy change, delta Urxn, when<br />
67.68 g of Cu2O (s) is oxidized at constant pressure of 1.00 bar<br />
and a constant temperature of 25 degree celcius? </p>
<p>(the two answer must be in kJ)</p>
<p>I cant get the right answer for some reason.</p>
<p>Thank you.</p>
<p>Show work please.’/></p>

                         <div class="abh_box abh_box_down abh_box_business"><ul class="abh_tabs"> <li class="abh_about abh_active"><a href="#abh_about">Author</a></li> <li class="abh_posts"><a href="#abh_posts">Recent Posts</a></li></ul><div class="abh_tab_content"><section class="vcard author abh_about_tab abh_tab" itemscope itemprop="author" itemtype="http://schema.org/Person" style="display:block"><div class="abh_image" itemscope itemtype="http://schema.org/ImageObject"><a href = "https://answerprime.com/" class="url" target = "_blank" title = "Answer Prime" rel="nofollow" > <img alt=

Leave a Comment