Answer:
0.05M or 0.05moldm⁻³
Explanation:
Mass of NaHSO₄ = 12g
Volume of water = 2L
Unknown:
Molarity of the solution = ?
Solution:
The molarity of a solution is the amount of moles of solute dissolved in a given volume of solvent.
Mathematically;
Molarity = [tex]\frac{number of moles}{volume}[/tex]
Let us find the number of moles of NaHSO₄;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
molar mass of NaHSO₄ = 23 + 1 + 32 + 4(16) = 120g/mol
Number of moles of NaHSO₄ = [tex]\frac{12}{120}[/tex] = 0.1mole
Now;
Molarity = [tex]\frac{0.1}{2}[/tex] = 0.05M or 0.05moldm⁻³
