Question

How many moles of KF would need to be added to 2500 ml of water to make 1.2 M solution?

Answer 1

The number of moles of KF needed to prepare the solution is 3 moles

What is molarity?

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

How to determine the mole of KF

• Volume = 2500 mL = 2500 / 1000 = 2.5 L
• Molarity = 1.2 M
• Mole of KF =?

Molarity = mole / Volume

1.2 = mole of KF / 2.5

Cross multiply

Mole of KF = 1.2 × 2.5

Mole of KF = 3 moles

Learn more about molarity:

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