дано
<span>CuSO4</span>
<span><span>ЭДС=12 В</span></span>
<span><span>r=<span>0,2 Ом</span></span></span>
<span><span><span>R=<span>0,4 Ом</span></span></span></span>
<span><span><span><span>t=5 мин = 300с</span></span></span></span>
<span><span><span><span>k=0.3294 мг/Кл для двухвалентной меди</span></span></span></span>
<span><span><span><span>-------------</span></span></span></span>
<span><span><span><span>m - ?</span></span></span></span>
<span><span><span><span>решение</span></span></span></span>
<span><span><span><span>сила тока в электролите I = ЭДС (R+r)</span></span></span></span>
<span><span><span><span>количество меди по закону Фарадея</span></span></span></span>
<span><span><span><span>m= k*I*t* =k*ЭДС (R+r) *t=0.3294*12/(0.4+0.2)*300=1976.4 мг =2 г</span></span></span></span>
<span><span><span><span>ОТВЕТ 2 г</span></span></span></span>