Question

One mole of oxygen is present in the following mass of sulphuric acid .​
98 g
24.5g
196g
49g​

Answer 1

Answer:

49 g

Explanation:

1 molecule of $H_2SO_4$ contains 4 $O$ atoms

So 1 mol of $H_2SO_4$ contains 4 mol of  $O$ atoms = $4\times 1/2$ mol of $O_2$ (oxygen)

So $\frac{1} {2}$ mol of $H_2SO_4$ gives 1 mol $O_2$

So, mass of $H_2SO_4$ =  $98 \times \frac{1} {2} = 49$ g

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