Respuesta :
Answer:
The molarity of the dissolved NaCl is 6.93 M
Explanation:
Step 1: Data given
Mass of NaCl = 100.0 grams
Volume of water = 100.0 mL = 0.1 L
Remaining mass NaCl = 59.5 grams
Molar mass NaCl= 58.44 g/mol
Step 2: Calculate the dissolved mass of NaCl
100 - 59. 5 = 40.5 grams
Step 3: Calculate moles
Moles NaCl = 40.5 grams / 58.44 g/mol
Moles NaCl = 0.693 moles
Step 4: Calculate molarity
Molarity = moles / volume
Molarity dissolved NaCl = 0.693 moles / 0.1 L
Molarity dissolved NaCl = 6.93 M
The molarity of the dissolved NaCl is 6.93 M
Answer : The molarity of the dissolved NaCl is, 6.92 M
Explanation : Given,
Total mass of [tex]NaCl[/tex] = 100.0 g
Mass of [tex]NaCl[/tex] remains = 59.5 g
Volume of solution = 100.0 mL
Molar mass of [tex]NaCl[/tex] = 58.5 g/mole
First we have to calculate the mass of dissolved NaCl.
Mass of dissolved NaCl = Total mass of [tex]NaCl[/tex] - Mass of
Mass of dissolved NaCl = 100.0 - 59.5 = 40.5 g
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :
[tex]\text{Molarity of the dissolved NaCl}=\frac{\text{Mass of }CH_3OH\times 1000}{\text{Molar mass of }CH_3OH\times \text{Volume of solution (in mL)}}[/tex]
Now put all the given values in this formula, we get:
[tex]\text{Molarity of the dissolved NaCl}=\frac{40.5g\times 1000}{58.5g/mole\times 100.0mL}=6.92mole/L=6.92M[/tex]
Therefore, the molarity of the dissolved NaCl is, 6.92 M
