A hydrochloric acid solution is standardized by titrating against solid sodium carbonate as shown in the following image.The HCl is in the buret and the sodium carbonate in the flask.
The equation is 2 HCl(aq) + Na2CO3(s) 2 NaCl(aq) + H2O(
) + CO2(g) .If 23.4 mL of the solution is added from the buret to neutralize 0.157 g Na2CO3 in the flask.what is the molarity of the HCl solution?
A) 0.0316 M
B) 0.0633 M
C) 7.90 M
D) 0.253 M
E) 0.127 M
Correct Answer:
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