Question

A sample of zinc oxide contains 80.25% of zinc . calculate the equivalent mass of zinc

Answer 1

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Answer 2

Answer : The equivalent mass of zinc is 32.51.

Solution : Given,

Zinc oxide contains 80.25 % of zinc.

Let, the mass of metal oxide is 'x'.

The mass of metal would be $\frac{80.25x}{100}$ and

The mass of oxide would be $\frac{19.75x}{100}$

As, we know that the metals react with oxygen to produce metal oxide.

or The mass of metal oxide generated when some mass of metal reacts with the oxygen.

Formula used :

$\text{ Equivalent mass of metal}=\frac{\text{ Mass of metal}\times 8}{\text{ Mass of oxygen in oxide}}$

Now put all the given values in this formula, we get the equivalent mass of metal.

$\text{ Equivalent mass of metal}=\frac{(\frac{80.25x}{100})\times 8}{(\frac{19.75x}{100})}=32.51$

Therefore, the equivalent mass of zinc is 32.51.