Answer:
The volume of water added is 30 mL
Explanation:
Given data
We can find V₂ using the dilution rule.
C₁ × V₁ = C₂ × V₂
0.4 M × 10 mL = 0.1 M × V₂
V₂ = 40 mL
The volume of water added is
V₂ - V₁ = 40 mL - 10 mL = 30 mL
Answer:
We have to add 30 mL to bring the new solution to 0.1M
Explanation:
Step 1: Data given
Volume = 10.0 mL
Molarity = 0.4M
New molarity = 0.1M
Step 2: Calculate moles of the original solution
moles = molarity * volume
Moles = 0.4M * 0.01 L
Moles = 0.004 moles
The number of moles will not change, the volume will.
Step 3: Calculate volume that we have to add
Volume = moles / molarity
Volume = 0.004 moles / 0.1 M
Volume = 0.04 L = 40 mL = The total new volume
Step 4: Calculate the volume that has to be added:
Volume added = 40 mL - 10 mL = 30 mL
We have to add 30 mL to bring the new solution to 0.1M
