Question

A 20.9 ml sample of a solution of rboh is

neutralized by 21.39 ml of a 2.548 m solution
of hbr. what is the molarity of the rloh
solution?
answer in units of m.

Answer 1

2.60 M

Step-by-step explanation:

M1V1=M2V2

Where

M1 = ?

V1 = 20.9 mL

M2 = 2.548 M

V2 = 21.39 mL

(?)(20.9 mL) = (2.548 M)(21.39 mL)

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(20.9 mL) (20.9 mL)

? = (54.50)/(20.9) = 2.60 M

(Side Note: the mL cancel each other out to leave M units only)