Welcome to Westonci.ca, your go-to destination for finding answers to all your questions. Join our expert community today! Get accurate and detailed answers to your questions from a dedicated community of experts on our Q&A platform. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.
Sagot :
Answer:
d. 0.208 M NaOH
Explanation:
M[NaOH] = 23+16+1= 40g/mol
2.40L = 2.4dm3
M=m/Mv
M=20.0g/40g/mol×2.4dm3
M=20.0g ÷ 96
M= 0.208 M NaOH
The statement of the molarity of a solution is "0.208 M NaOH."
What is molarity?
The amount of a chemical substance in a defined volume of the solution is measured in molarity (M). The moles of a solute per litre of a solution is known as molarity. The molar concentration of a solution is also known as molarity.
In order to determine the molarity, initially calculate the number of moles of sodium hydroxide by dividing the given mass by molar mass of NaOH.
Gram to mole conversion factor,
Moles of NaOH
[tex]= (20.0\;g) * \frac{(1\;mol\;NaOH)}{(39.998\;g)} \\= 0.50\;mol[/tex]
Now, the molarity of the solution comes out to be,
[tex]Molarity = \frac{Moles\;of\;the\;solute}{Volume\;of\;the\;solution}[/tex]
So,
[tex]= \frac{0.0500 \;mol}{2.40\;L} \\= 0.208\;\frac{mol}{L} = 0.208\;M[/tex]
Hence the correct option is b.
Learn more bout molarity here
https://brainly.com/question/11386850
#SPJ2
Thank you for choosing our service. We're dedicated to providing the best answers for all your questions. Visit us again. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Keep exploring Westonci.ca for more insightful answers to your questions. We're here to help.