Using the cell voltage measured for the first cell studied, with cell chemistry Zn/Zn^2+ \ Cu^2+/Cu, and the known half life potential for Zn^2/Zn calculate the reduction potential for Cu^2+/Cu and enter value below.
The information received for this problem were the values obtained during an online lab:
Cu xM cell voltage:1.100 V
Range: 0.005 V
Temp: 25 degrees C
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Ответ:
The reduction potential of
is ![E_c^o = 0.34 \ V](/tpl/images/0675/7954/cfa63.png)
Explanation:
From the question we are told that
The potential of the cell is![M_{cell} = E^o _{cell} = 1.100 \ V](/tpl/images/0675/7954/5025b.png)
The range is![R = 0.005 \ V](/tpl/images/0675/7954/91325.png)
The temperature is![T = 25 ^oC](/tpl/images/0675/7954/ec6e7.png)
Note the reason why Zn is oxized and Cu is reduced is because Zn is higher than Cu on the electrochemical series
The reaction at the anode is
The![E^o\ is \ the \ standard\ oxidation \ potential\ value\ for\ Zn\ oxidation](/tpl/images/0675/7954/90788.png)
The reaction at the anode is
Now
substituting values
Hence the reduction potential of
is ![E_c^o = 0.34 \ V](/tpl/images/0675/7954/cfa63.png)
Ответ:
1) volumetric
2) graduated
3) volumetric
Explanation:
A volumetric glassware is a glassware that is marked at a particular point. A typical example of a volumetric glassware is the volumetric flask. A volumetric glassware is capable of measuring only a specific volume of a liquid.
On the other hand, graduated glassware can measure a range of volumes of liquid. However, a volumetric glassware is still required where a high degree of accuracy is important.