Question

Volume in ml of 0.220 m hbr solution is required to produce 0.0170 moles

Answer 1

Molality is defined as the number of moles of solute present in 1L of solution.

Molality (M) = No of moles of solute / 1 L of solution

Litre of solution = No of moles of solute / Molality

Molality = 0.220M

No of moles= 0.0170 mol

Volume in L = 0.0170/0.220

= 0.0772 L

Volume in mL = 77.27 mL

What is mole?

• A mole is a very important unit of measurement used by chemists.
• moles of something means there are 602,214,076,000,000,000,000,000,000,000,000 number of something.
• Chemists need to measure very small things such as atoms, molecules and other particles in moles.
• 602,214,076,000,000,000,000,000 is called Avogadro's number, abbreviated as 6.02 x $10^{23}$

Therefore, Volume in ml of 0.220 m hbr solution is required to produce 0.0170 moles is 77.27 mL.

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