Question

A 2.50M solution of NaOH is diluted from a volume of 0.890L to a volume of 2.00L, What is the new molarity?

O 2.78011
O 1.11M
O 5.62M
O 4.5M

Answer 1

1.11 M

Step-by-step explanation:

M₁V₁ = M₂V₂

Step 1: Define

Molarity₁ = 2.50 M

Volume₁ = 0.890 L

Molarity₂ = unknown

Volume₂ = 2.00 L

Step 2: Substitute and Evaluate for M₂

(2.50 M)(0.890 L) = (M₂)(2.00 L)

2.225 = M₂(2.00 L)

M₂ = 1.1125 M

Step 3: Simplify

We are given 3 sig figs.

1.1125 M ≈ 1.11 M