Question

How many milliliters of 0.0896 m naoh are required to titrate 25.0 ml of 0.0759 m hbr to the equivalence point? how many milliliters of 0.0896 m naoh are required to titrate 25.0 ml of 0.0759 m hbr to the equivalence point? 21.2 29.5 0.272 0.170 4.14?

Answer 1

Hello!

The chemical equation for the neutralization reaction between HBr and NaOH is the following:

HBr + NaOH → NaBr + H₂O

We can apply then the following equation at the equivalence point:

$moles HBr=moles NaOH \\ \\ cHBr*vHBr=cNaOH*vNaOH \\ \\ vNaOH= \frac{cHBr*vHBr}{cNaOH}= \frac{0,0759M*25 mL}{0,0896 M}=21,2 mL$

So, the correct answer is 21,2 mL of NaOH

Have a nice day!