Question

a solution contains 100g nacl and 500g h2O having 0.6 litres. calculate molarity and molality.

Answer 1

Answer:

NaCl is solute and water is solvent here.

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 moles

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6=2.848 mol/litre

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6=2.848 mol/litremass of water in kg =500/1000=0.5kg

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6=2.848 mol/litremass of water in kg =500/1000=0.5kgmolality = ( no. of moles of solute / mass of solvent in kg)

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6=2.848 mol/litremass of water in kg =500/1000=0.5kgmolality = ( no. of moles of solute / mass of solvent in kg)=1.709/0.5

NaCl is solute and water is solvent here.molecular mass of NaCl =23+35.5=58.5no. of moles of solute(NaCl) = (given mass/molecular mass )=100/58.5= 1.709 molesMolarity=(No. of moles of solute/ volume of solution in litres)=1.709/0.6=2.848 mol/litremass of water in kg =500/1000=0.5kgmolality = ( no. of moles of solute / mass of solvent in kg)=1.709/0.5=3.418 mol/kg