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Answer to Question #22083 in Inorganic Chemistry for khadijah

Question #22083
What mass of NaCl is needed to produce 500 mL of a 2.0 mol/L solution?
Expert's answer
1)Convert mL to L:
2) find number of moles NaCl in our solution:
n(NaCl)=C(NaCl)*V(NaCl)=2.0mol/L * 0.5L=1.0 mol
3) find mass of NaCl in 1 mol:
m(NaCl)=n(NaCl)*Mr(NaCl)=1.0mol*58.44 g/mol=58.4 g.

we need 58.4 g of NaCl.

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