If the reaction of 3.75 moles of lithium with excess hydrofluoric acid produced a 96.5% yield of hydrogen gas, what was the actual yield of hydrogen gas? unbalanced equation: li + hfyields lif + h2

Answer : The actual yield of hydrogen gas is, 3.618 grams

Explanation : Given,

Given moles of = 3.75 moles

Molar mass of = 2 g/mole

Now we have to calculate the moles of .

The balanced chemical reaction will be,

From the given balanced reaction, we conclude that

As, 2 moles of react to give 1 mole of

So, 3.75 moles of react to give moles of

Now we have to calculate the mass of .

The theoretical yield of is, 3.75 grams

Now we have to calculate the actual yield of .

Therefore, the actual yield of hydrogen gas is, 3.618 grams

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