Match each sodium salt solution with its corresponding number of sodium ion moles.
-100 mL of 0.2 M sodium hypochlorite solution

Question

Quizplus · Accepted Answer

Since we are given that the sodium hypochlorite solution is 0.2 M, we can use the formula Molarity = moles/volume (in L) to calculate the number of moles of sodium ions present in 100 mL of the solution.

Molarity = moles/volume
0.2 M = moles/0.1 L (100 mL = 0.1 L) 
moles = 0.2 x 0.1 = 0.02

Therefore, there are 0.02 moles of sodium ions in 100 mL of the sodium hypochlorite solution. 
So, the best choice is B with the explanation that follows.

Match Each Sodium Salt Solution with Its Corresponding Number of Sodium