Ask Question
22 February, 22:35

Sa solution is made by dissolving 26.42 g of (NH4) 2SO4 in enough H2O to make 50.00 mL of solution. what is the molarity of the solution

+1
Answers (1)
  1. 23 February, 02:33
    0
    The answer is 0.2 M.

    Molarity is a measure of the concentration of solute in a solution

    c = n : V

    c - concentration of solute,

    n - number of moles of solute

    V - volume of solution

    We know:

    V = 50.00 mL = 0.05 L

    c = ?

    n = ?

    Let's calculate concentration:

    c = m / (V * Mr)

    The molar mass of (NH4) 2SO4 is the sum of atomic masses (Ar) of its elements):

    Mr ((NH4) 2SO4) = 2Ar (N) + 8 Ar (H) + Ar (S) + 4Ar (O)

    = 2 * 14 + 8 * 1 + 32 + 4 * 16 =

    = 28 + 8 + 32 + 64 =

    = 132 g/mol

    c = 26.42 g / (0.05 L * 132g / mol) = 26.42 g / 6.6 L*g/mol = 4 mol/L = 4 M

    Now, calculate molarity:

    c = n : V

    n = c * V

    n = 4 mol/L * 0.05 L

    n = 0.2 mol
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Sa solution is made by dissolving 26.42 g of (NH4) 2SO4 in enough H2O to make 50.00 mL of solution. what is the molarity of the solution ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers