johndous6917 johndous6917
  • 09-01-2020
  • Chemistry
contestada

A 100 mL sample of hydrobromic acid, HBr, is titrated to
anendpoint with 24.0 mL of 1.5 N NaOH. What is theconcentration of
HBr?

Respuesta :

dsdrajlin
dsdrajlin dsdrajlin
  • 09-01-2020

Answer:

0.36 N

Explanation:

Let's consider the neutralization between HBr and NaOH.

HBr + NaOH → NaBr + H₂O

The equivalents of NaOH that reacted are:

24.0 × 10⁻³ L × 1.5 eq/L = 0.036 eq

Since the reactions are equivalent to equivalent, also 0.036 equivalents of HBr reacted.

The normality of HBr is:

N = 0.036 eq / 0.100 L = 0.36 N

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