The number of milliliters of 3.0m NaOH required to react with 0.5g of Cu2+ to form Cu(OH)2 is 5.249 ml
The reaction is as follows;
2NaOH + Cu2+ ------------> Cu(OH)2 + 2Na+
From the balanced chemical reaction, 0.5 g of Cu2+ = 0.5/63.5 = 7.874x10-3 moles (molar mass of Cu2+ = 63.5 g)
Thus, moles of NaOH required = 2*moles of Cu2+ = 0.01575
Now, moles of NaOH = molarityxvolume in litres
or, 3*volume in litres = 0.01575
or, volume in litres = 5.249*10-3 litres = 5.249 ml
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