Nickel-Iron Battery

Chemistry

2 answers:

tatuchka [14]3 years ago

8 0

The answer is: 4.00 mol of Fe(OH)2 is produced.

Balanced chemical reaction:

Fe(s) + 2NiO(OH)(s) + 2H₂O(l) → Fe(OH)₂(s) + 2Ni(OH)₂(aq).

n(Fe) = 5.00 mol; amount of iron.

n(NiO(OH)) = 8.00 mol; amount of nickel oxide hydroxide, limiting reactant.

From chemical reaction: n(NiO(OH)) : n(Fe(OH)₂) = 2 : 1.

n(Fe(OH)₂) = 8 mol ÷ 2.

n(Fe(OH)₂) = 4 mol; amount of iron(II) hydroxide.

irina1246 [14]3 years ago

6 0

Answer:

4.0 moles of Fe(OH)₂.

Explanation:

It is a stichiometry problem.

The balanced equation: <em>Fe + 2NiO(OH) + 2H₂O → Fe(OH)₂ + 2Ni(OH)₂</em>,

It is clear that 1.0 mole of Fe reacts with 2.0 moles of NiO(OH) and 2.0 moles of H₂O to produce 1.0 mole of Fe(OH)₂ and 2.0 moles of Ni(OH)₂.

The given data: <em>5.00 moles of Fe reacts with 8.00 mol of NiO(OH)</em>.

From the stichiometry; 4.0 moles of Fe (1.0 mole will be in excess) reacts completely with 8.0 moles of NiO(OH) and produce 4.0 moles of Fe(OH)₂.

You might be interested in

Which ionic compound is soluble in water pbbr2, fe (oh)3,ca(no3)2, baso4?

Anton [14]

Ionic compound are those compounds which are made up of ions. The ion which has tendency to loose electrons is said to cation (positive charge) such as metals whereas ion which has tendency to gain electrons is said to anion (negative charge) such as non-metals.

Calcium nitrate is quite soluble in water due to very low lattice enthalpy in comparison to other ionic compound. With lower lattice enthalpy, less energy is required for the dissociation of calcium nitrate and it get dissolves in water than other three compounds. Moreover, hydration energy is higher for calcium nitrate which make its solubility higher in water than other ionic species.

Thus, $Ca(NO_{3})_{2}$ is correct answer.