The strongest binary acid below is _____.
A) H2S
B) H2Se
C) H2O
D) CH4
How do you tell which is stronger?
2006-09-25 07:37:04 · 8 answers · asked by hmmm 2 in Science & Mathematics ➔ Chemistry
It's B, hydrogen selenide. Acid strength for binary compounds increases as you go left to right across the periodic table and as you go down a group.
The strongest acids will be those where the conjugate base formed can most easily accomodate the negative charge that will be created. As selenium is a larger element than either sulfur or oxygen, the charge/size ratio is smaller, and selenium can accomodate the negative charge better. Same is true of oxygen vs. carbon, which is why chalcogenides ionize much more readily than elements in the carbon group.
2006-09-25 07:55:12 · answer #1 · answered by TheOnlyBeldin 7 · 1⤊ 0⤋
H2s Binary Acid
2017-01-13 10:42:09 · answer #2 · answered by ? 4 · 0⤊ 0⤋
H2Se
The strongest binary acid is the one that undergoes the following reaction H2Z -> 2H+ + Z2-. most readily.
This would ne H2Se as the species Se2- is the least reactive. My guess is that it would have a pKa of about 6
2006-09-25 07:47:44 · answer #3 · answered by christopher N 4 · 0⤊ 0⤋
It's B. H2O is just pure water, CH4 is not acid, cuz it doesn't start with H. H2S is Hydrogen Sulfide, a poison gas, so the answer should be H2Se.
2006-09-28 14:42:25 · answer #4 · answered by yenthieu2001 2 · 0⤊ 0⤋
H2Se, beacuse of its binary structure
2006-09-27 18:08:27 · answer #5 · answered by tina h 1 · 0⤊ 0⤋
i dont know but i think its h2s, who told u h2o is an acid
2006-09-25 07:40:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋
water
2006-09-25 07:40:33 · answer #7 · answered by allusional 2 · 0⤊ 0⤋
its a guess, but i'd say a.
2006-09-25 07:40:16 · answer #8 · answered by stephizzal 5 · 0⤊ 0⤋