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Anastaziya [24]
3 years ago
5

When dissolved in water, hydrogen bromide (hbr) forms hydrobromic acid. determine the hydroxide ion concentration in a 4,500 ml

solution containing 3.78 g hydrogen bromide; kw = 1.00 × 10¯14?
Chemistry
1 answer:
vovikov84 [41]3 years ago
7 0

No of moles of HBr = 3.78g / 80.9 = 0.0467moles 
 Molarity = Number of moles/ volume. So we have 0.0467 / 4.5 = 0.0103M. 
 Kw = 1.0 x 10 -14 = [H3O+] [OH-] and [OH-] = 1.0 x 10^(-14) / [H3O+] 
 So [OH-] = 1.0 * 10^(-14) /1.03 *10^(-2) = 0.9703 * 10^(-12) M
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