What is the concentration in moles/L) if 50 grams of sodium phosphate is dissolved in 2 liters of water?

Molarity = 0.15 mol/L

Explanation:

Given data:

Concentration of solution = ?

Mass of sodium phosphate = 50 g

Volume of water = 2 L

Solution:

Number of moles of sodium phosphate = mass / molar mass

Number of moles = 50 g/ 163.94 g/mol

Number of moles = 0.30 mol

Molarity:

Molarity = number of moles of solute / volume in L

Molarity = 0.30 mol / 2 L

Molarity = 0.15 mol/L

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

the dissolution of polymer can be thermodynamically described in 2 steps.