Answer to Question #260772 in Inorganic Chemistry for Smiles

Question

Calculate the molar concentration of solute in each of the following:

1. Exactly 7.59g of NH₃ dissolved in 1.500L of solution.
2. Exactly 0.291g of N₂SO dissolved in 8.65L of solution.
3. Exactly 85.2g of NaOH dissolved in 5.00L of solution.
4. Exactly 31.25g of NaCl dissolved in 2.00L of solution.
5. Exactly 6.00mg of atmospheric N₂ dissolved in water in a solution volume of 2.00L.

Answer 1

Molarity of $NH_3=[\frac{7.59}{17.031}]÷1.500=0.297M$

$H_2SO_4=[\frac{0.291}{ 98.079 }]÷8.65=0.00034M$

$NaOH=[\frac{85.2} { 39.997 }]÷5.00=0.43M$

$NaCl=[\frac{31.25}{ 58.44 }]÷2.00=0.267M$