What mass of zinc and the volume of a 25% NaOH solution (p = 1.28 g / cm3) should be taken in order

| April 26, 2021 | education

What mass of zinc and the volume of a 25% NaOH solution (p = 1.28 g / cm3) should be taken in order to completely restore 12.3 g of nitrobenzene to aniline with the hydrogen obtained during their interaction?

1.In the first step, we find the amount of the substance, in this case, nitrobenzene. For this, the mass of nitrobenzene must be divided by the molar mass.

2. According to the equation, we correlate the number of moles.
3. Find the amount of hydrogen (H2) substance, and from there already the amount of zinc (Zn) and sodium hydroxide (NaOH)

4. Further, based on the amount of substance and molar mass, you can find the mass of substances.

5.Further, from the mass of hydroxide and the% content of hydroxide, find the mass of the solution.

6. Next, we divide the mass by the density, we get the volume.



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