A student needs to prepare 2.00 L of
0.100 M Na2CO3(aq). What is the best
procedure to accomplish this? (The molecular
mass of Na2CO3 is 106 g/mol.)
(A) Weigh out 21.2 g Na2CO3 and add water until the final homogeneous solution has a volume of 2.00 L.
(B) Weigh out 10.6 g Na2CO3 and add water until the final homogeneous solution has a volume of 2.00 L.
(C) Weigh out 10.6 g Na2CO3 and add 2.00 L of water and mix to make a homogenous mixture.
(D) Weigh out 21.2 g Na2CO3 and add 2.00 L of water and mix to make a homogenous mixture.

Question

A student needs to prepare 2.00 L of
0.100 M Na2CO3(aq). What is the best
procedure to accomplish this? (The molecular
mass of Na2CO3 is 106 g/mol.)
(A) Weigh out 21.2 g Na2CO3 and add water until the final homogeneous solution has a volume of 2.00 L.
(B) Weigh out 10.6 g Na2CO3 and add water until the final homogeneous solution has a volume of 2.00 L.
(C) Weigh out 10.6 g Na2CO3 and add 2.00 L of water and mix to make a homogenous mixture.
(D) Weigh out 21.2 g Na2CO3 and add 2.00 L of water and mix to make a homogenous mixture.