Answer:
pH = 0.81
Explanation:
HCl reacts with aniline, thus:
C₆H₅NH₂ + HCl → C₆H₅NH₃⁺ + Cl⁻
Moles of HCl are:
0.085L × (0.35mol HCl / L) = <em>0.02975mol HCl</em>
Moles of aniline are:
0.030L × (0.40mol HCl / L) = <em>0.012mol aniline</em>
Thus, after reaction, will remain:
0.02975mol - 0.012mol = <em>0.01775mol HCl</em>
Moles of HCl in solution are equal to moles of H⁺, thus, moles of H⁺ are: <em>0.01775mol H⁺</em>
As total volume is 85.0mL + 30.0mL = 115.0mL ≡ <em>0.115L</em>
0.01775mol / 0.115L = 0.1543M
pH of solution = -log[H⁺]
pH = -log 0.1543M
<em>pH = 0.81</em>
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(SO4)2 The SO4 = 4 oxygen and having a 2 like that (SO4)2 makes it have 2 S, and 8 O’s
Answer:
The most stable ion of cesium is the 1+ ion, or Cs+.
Explanation:
Answer: the basic difference is Exergonic reactions release energy and an endergonic reactions absorb energy .
HOPE THIS HELPS!!!
The oxidation number of O is -2 and there's 4 of them so the total is -8. Since it's a molecule the sum of the oxidation numbers of the atoms must equal 0. If 4 oxygen atoms have an oxidation number of -8 then the two S atoms must is +8 to equal 0 so the oxidation number of the S is 8/2 = +4
