Textbook problem B.7

[805377003]

A student prepared a solution of sodium carbonate by adding 2.111 g of the solid to a 250.0-mL volumetric flask and adding water to the mark. Some of this solution was transferred to a buret. What volume of solution should the student transfer into a flask to obtain (a)
2.15
mmol
Na
+
;
2.15
 
mmol
 
Na
+
;
(b)
4.98
mmol
CO
3
2
−
;
4.98
 
mmol

[vbarian27]

I got a) 13.5 mL b)62.5mL and c) 5.92mL