If 4.34 moles of potassium react with excess water, how many moles of hydrogen gas would be produced at STP

Question

Zechariah

Chemistry

4 July, 05:56

If 4.34 moles of potassium react with excess water, how many moles of hydrogen gas would be produced at STP

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Answers (1)

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Margaret Gentry · Answer 1

2.17 mol

Explanation:

Given dа ta:

Number of moles of potassium = 4.34 mol

Moles of hydrogen gas produced at STP = ?

Solution:

Chemical equation:

2K + 2H₂O → 2KOH + H₂

Now we will compare the moles of hydrogen and potassium.

K : H₂

2 : 1

4.34 : 1/2*4.34 = 2.17 mol

So, from 4.34 moles of potassium 2.17 moles of hydrogen are produced at STP.