A 25.0 mL sample of HCL was tirtrated to the with 15.0 mL of 2.0 M NaOH. what is the molarity of HCL?

Molarity of HCl= 1.3 M

Explanation:

Given data:

Volume of HCl = 25.0 mL

Molarity of HCl = ?

Volume of NaOH = 15 mL

Molarity of NaOH = 2.0 M

Solution:

Formula:

M₁V₁ = M₂V₂

M₁ = Molarity of HCl

V₁ = Volume of HCl

M₂ = Molarity of NaOH

V₂ = Volume of NaOH

Now we will put the values.

M₁  × 25 mL = 2.0 M ×  15 mL

M₁  × 25 mL  = 30 M.mL

M₁  = 30 M.mL / 25 mL

M₁ = 1.3 M

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

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