2 reactions in this lab were double replacement reactions that formed precipitates.
Part B was the first of these two. We started with Cu(NO3)2 and added NaOH. This formed a solid Cu(OH)2c and an aqueous solution NaNO3. The driving force was formation of a solid, and since NaOH is soluable, Na(NO3)2 formed a solid
The second precipitation reaction occured in Part E. We started with a solution of Cu(PO4)2 and added H2SO4. This formed aqueous NaCl and solid Cu3(PO4)2. The driving force in this reaction was formation of a solid and since NaCl is soluable, Cu3(PO4)2 formed a precipitate
Tuesday, December 14, 2010
Sigle Replacement Reaction
Part G was a single replacement reaction. Zinc is reacting with cupric sulfate solution to form zinc sulfate and solid copper (Zn+ Cu(SO4)=ZnSO4+Cu) The driving force in this reaction was creation of a solid (copper)
Monday, December 13, 2010
Striving for Accuracy
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKncL7MY5G1PD7QXfkId9O-ZJi12OZ-DlSHJLAqlPyC_muKXZ2txhx1v228uTsHUSlXszUWNOTrT9_28zslN31XJmti76GwDsIXMoK8cN40ym5wZIyt1WjAoPnHoW5jT_rUJtxoTXWcqXh/s320/part+c+2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdVMGvGW6o2RJ4LE9e0OLpMAbTrcP2eVGeCUhdEL4UfJmFjyLdvcsKivs7KSpswwC4M6iin9fOZm_rOFlRE8NIAxQR88CYzSmhbFFbRlGS_NJIMBZPIqfhbEBid0UtL0SbYR_9e8gI6A6y/s320/SFA+3.jpg)
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![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirSgLie_IdKHTOF8y1Ojk7PLp14UjqmDewz9n0DLwu1oW63pUPEU46B58QNyEgZhPpJ7lQ9qYFr0Hb_Sc9W_qrcxVTnt5Mxcdy-T0tSPYIz6_RSMRCBSNv3IBWyxm5gWW7O2h4UxC-U7JL/s320/SFA+1.jpg)
In picture #1, Carley is constantly stirring the solution to ensure that the reaction takes place properly
In picture #3, Olivia and Carley are being precise while holding the beaker up to the light to see whether the precipitation reaction is complete
In picture #4, Olivia is washing off the outside of the beaker with distilled water to ensure that all the copper solution makes it to the filter
In picture #2, Lexi is down at eye level, making sure that there is exactly 100ml of solution
In picture #3, Olivia and Carley are being precise while holding the beaker up to the light to see whether the precipitation reaction is complete
In picture #4, Olivia is washing off the outside of the beaker with distilled water to ensure that all the copper solution makes it to the filter
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