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AleksAgata [21]
3 years ago
13

If 1.8 L of water is added to 2.5L of a 7.0 Molarity

Chemistry
1 answer:
liq [111]3 years ago
6 0

Answer:

4.1 mol·L⁻¹

Explanation:

You are diluting the solution with water, so you can use the dilution formula

c₁V₁ = c₂V₂     Divide each side by V₂

 c₂ = c₁ × V₁/V₂

Data:

c₁ = 7.0 mol·L⁻¹; V₁ = 2.5 L

Water added = 1.5 L

Calculations:

(a) <em>New volume </em>

V₂ = 2.5 L + 1.8 L

     = 4.3 L

(b) <em>New concentration </em>

c₂ = 7.0 × 2.5/4.3

    = 7.0 × 0.581

    = 4.1 mol·L⁻¹

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