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General Chemistry

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Chemical Reactions

Question
4 out of 15
 

How many grams of sodium chloride are required to synthesize 73 grams of hydrogen chloride, if the reaction involves sodium chloride and sulfuric acid?



A 58.5 grams
B 117 grams
C 175.5 grams
D 234 grams
Ans. B First, we have to check whether the given reaction is balanced. Without the balanced equation, the calculations will be incorrect. As a matter of fact, the given reaction is not balanced. The balanced equation is this:

image\28538 ch 2 sol 4.png

Now we can work out our magic calculations. The question specifies the grams of HCl synthesized. The 73 grams converted to moles should give 2 moles. According to the equation, 2 moles of NaCl are required to synthesize two moles of HCl. All you have to do now is to convert moles to grams. The correct value is 117 grams of NaCl.

Chemical Reactions Flashcard List

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