Answered

What mass of Ca(OH)2 is contained in 1500 mL of 0.0250 M Ca(OH)2 solution?


Your answer:


1.85 g



2.34 g



2.78 g



3.17 g

Answer :

We need moles of Ca(OH)_2

  • Molarity=Moles/Volume in L
  • 0.025=Moles/1.5
  • Moles=1.5(0.025)
  • Moles=0.0375mol

Molar mass of Ca(OH)_2=74g/mol

Now

  • Mass=Molar mass×Moles
  • Mass=0.0375×74
  • Mass=2.77g

Option C

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