4 g of NaOH are dissolved in 200 cm^3 of water. Find the molarity of t

1.	4 g of NaOH are dissolved in 200 cm^3 of water. Find the molarity of the solution.
Answer» <html><body><p></p>Solution :Mass of NaOH dissolved = 4g <br/> Molecular mass of NaOH = 23 + <a href="https://interviewquestions.tuteehub.com/tag/16-276476" style="font-weight:bold;" target="_blank" title="Click to know more about 16">16</a> +<a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> = 40 <br/> `<a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a>` Moles of NaOH dissolved `=4/40 = 0.1` <br/> Volume of water taken `=<a href="https://interviewquestions.tuteehub.com/tag/200-288914" style="font-weight:bold;" target="_blank" title="Click to know more about 200">200</a> cm^(3) = 200 xx 10^(-3) <a href="https://interviewquestions.tuteehub.com/tag/l-535906" style="font-weight:bold;" target="_blank" title="Click to know more about L">L</a>` <br/> The molarity of the solution `=("No. of moles of NaOH")/("Volume in litres")` <br/> `=0.1/(200 xx 10^(-3))` <br/> `=0.5 mol L^(-1)` <br/> Hence, the given solution is 0.5 M</body></html>

4 g of NaOH are dissolved in 200 cm^3 of water. Find the molarity of the solution.