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madam [21]
3 years ago
8

Determine the molarity of 50 mL of HCl solution with unknown concentration, titrated with 75 mL of 4.0 M NaOH.

Chemistry
2 answers:
Aleks04 [339]3 years ago
8 0

Answer:

The answer to your question is 6.0M, I know that you said it was not the answer, but it is. Check the significant figures.

Explanation:

Data

Molarity = ?

volume of HCl = 50 ml

volume of NaOH = 4 M

volume = 75 ml

Balanced chemical reaction

        HCl  +  NaOH  ⇒  NaCl  +  H₂O

Process

1.- Calculate the moles of NaOH

Molarity = moles/volume

moles = Molarity x volume

moles = 4 x 0.075

moles = 0.3 of NaOH

2.- Use proportions to calculate the moles of HCl

                 1 mol of NaOH ----------------- 1 mol of HCl

                0.3 moles of NaOH ----------  x

                 x = (0.3 x 1)/1

                 x = 0.3 moles of HCl

3.- Calculate the molarity of HCl

Molarity = 0.3/0.05

Molarity = 6.0 M

Ilya [14]3 years ago
3 0

Answer:

Explanation:

C1V1= C2V2

50×C1= 75 × 4

C1=75×4÷50

C1= 6M

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