58 773
Assignments Done
Successfully Done
In March 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Inorganic Chemistry Question for pp

Question #30630
describe the preparation of : 250ml of 0.1N (Na2Co3) from the solid reagent.
Expert's answer
The equivalent weight of Na2CO3 is 53. For 0.1 N solutionof Na2CO3 we need
0.1*53 = 5.3 g of Na2CO3 for 1 L.
For 0.25 L of solution we need
0.25*5.3 = 1.325 g of Na2CO3.

Thus, we should weigh 1.325 g of Na2CO3 and transfer it into the 250 mL volumetric flask and add water to below the neck portion of the flask to dissolve the solid. If you shake the flask to help dissolve the solid, make sure the stopper is in place. After the solid is completely dissolved, very carefully fill the flask to the mark.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question