4 g of copper was dissolved in conc . HNO 3 . The copper nitrate thus obtained gave 5 g of its oxide on strong heating the equivalent weight of copper is

Step-by-step solution

4   g of copper gave 5   g of its oxide means, 1   g of oxygen combine with 4   g of copper. ∵ Eq. wt of oxygen = 8 , Therefore, 8   g of oxygen combine with = 4 × 8   g of copper = 32   g Hence, Equivalent weight of copper = 32