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Vesna [10]
3 years ago
6

A 11.0 mLmL sample of 0.30 MHBrMHBr solution is titrated with 0.16 MNaOHMNaOH. Part A What volume of NaOHNaOH is required to rea

ch the equivalence point? Express the volume to two significant figures and include the appropriate units. nothingnothing
Chemistry
1 answer:
cupoosta [38]3 years ago
4 0

Answer:

21 mL of NaOH is required.

Explanation:

Balanced reaction: HBr+NaOH\rightarrow NaBr+H_{2}O

Number of moles of HBr in 11.0 mL of 0.30 M HBr solution

= (\frac{0.30}{1000}\times 11.0) moles = 0.0033 moles

Let's say V mL of 0.16 M NaOH solution is required to reach equivalence point.

So, number of moles of NaOH in V mL of 0.16 M NaOH solution

= (\frac{0.16}{1000}\times V) moles = 0.00016V moles

According to balanced equation-

1 mol of HBr is neutralized by 1 mol of NaOH

So, 0.0033 moles of HBr are neutralized by 0.0033 moles of NaOH

Hence, 0.00016V=0.0033

           \Rightarrow V=\frac{0.0033}{0.00016}=21

So, 21 mL of NaOH is required.

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