Three 15.0 mL acid samples – 0.10 M HA, 0.10 M HB, and 0.10 M H2C – are all titrated with 0.100 M NaOH. If HA is a weak acid, HB is a strong acid, and H2C is a diprotic acid, which statement is true of all three titrations?
a.All three titrations have the same final pH.
b.All three titrations require the same volume of NaOH to reach the first equivalence point.
c.All three titrations have the same pH at the first equivalence point.
d.All three titrations have the same initial pH.
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Ответ:
Explanation:
Br₂(g) + Cl₂(g) => 2BrCl(g)
excess 2.74mole ?moles
Rxn ratio is 1mole Cl₂(g) : 2mole BrCl which means the yield of BrCl must be larger mole value than the Cl₂(g) mole value. This is accomplished by multiplying the given moles Cl₂(g) by a ratio of coefficients that will make the results larger.
moles BrCl(g) produced = 2/1(2.47mole BrCl(g) = 5.48 mole BrCl(g)