Molarity is the number of moles of solute present in one litre of solution and is denoted by M
M = Number of moles of solute *1000/ Volume of solution in mL
Number of moles = M * Volume of solution in mL/1000
Given that 57.0 mL of 0.734 M CaCl2 solution.
Number of moles of CaCl2 in 57.0 mL of 0.734 M CaCl2 solution are
= 57.0 mL * 0.734 M/1000
= 0.04184 moles.
We know that
One mole of CaCl2 gives one mole calcium ions and 2 moles of chloride ions.
Number of moles of Calcium ions (Ca2+) = 0.04184 moles = 0.0418 moles
Number of moles of Chloride ions (Cl-)
= 2*0.0418 moles
= 0.0836 moles
= 0.0836 moles
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