Place the following molecules in order from weakest(1) to strongest (4) acid: H2O, H2SO4, H2Se, CH4....

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Question

Place the following molecules in order from weakest(1) to strongest (4) acid: H2O, H2SO4, H2Se, CH4....

Place the following molecules in order from weakest(1) to strongest (4) acid: H2O, H2SO4, H2Se, CH4. Please explain what method you use to determine this. Thanks!

science chemistry

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Answer 1

Answer #1

Answer:

CH₄(Weakest)<H₂O<H₂Se<H₂SO₄ (Strongest)

According to pKa values the acidc strength was determined here.

the pKa of CH₄=51, H₂O=15.7, H₂Se=11 and H₂SO₄=-10

So more pKa value less acidic.

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Answer 2

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Place the following molecules in order from weakest(1) to strongest (4) acid: H2O, H2SO4, H2Se, CH4....