12) When diluting an acid, always add a) base to acid b) acid to base c) water t
ID: 1025464 • Letter: 1
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12) When diluting an acid, always add a) base to acid b) acid to base c) water to acid d) acid to water e) diluted acid to concentrated acid 13) The limiting reactant in a reaction is the substance a) that has the lowest molar mass b) with the lowest mass in grams c) that is left over after the reaction has completed d) that is completely consumed in a reaction 14) Consider the following reaction: 2A+3B 3C + 2D In a reaction of 2.0 mol A and 3.0 mol B you obtained 1.2 mol of D. What is the percent yield of this reaction? a) b) c) d) 40% 50% 60% 70% 15) Accuracy refers to a) how close a measured number is to zero b) how close a measured number is to the calculated value c) how close a measured number is to other measured numbers d) how close a measured number is to the true valueExplanation / Answer
12. Option D, since acid to water
13. Option D, it should be complety consumed in the reaction
14. Option C, percentage of yield = 1.2x100/2=60
15. Option D, closeness of measured values to true values.
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