1. If 14.95 mL of a 0.1250 M HCl solution is added to reach theendpoint of a titration, how many moles of HCl have been added?
| | 0.001869 moles |
| | 0.008361 moles |
| | 8.361 moles |
| | 0.1196 moles |
| | 1.869 moles |
QUESTION 2
A buret is read to how many decimal places?
| | 3 |
| | can only be read to the ones place - so no decimal places |
| | 2 |
| | 4 |
| | 1 |
QUESTION 3
As the endpoint nears what happens to the color?
| | nothing can visibly be seen until the endpoint happens |
| | the color begins being more prominent, but still disappears |
| | the color is very vibrant but then will go away when theendpoint happens |
| | there is no color change yet |
| | color is perminent |
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QUESTION 4
A 20.00 mL sample of 0.1015 M nitric acid is introduced into aflask, and water is added until the volume of the solution reaches250. mL. What is the concentration of nitric acid in the finalsolution?
| | 5.08 × 10–4 M |
| | 3.25 × 10–2 M |
| | 8.12 × 10–3 M |
| | 0.406 M |
| | 1.27 M |
QUESTION 5
If 25.0 mL of an unknown concentration of sodium hydroxide isadded to a flask and then titrated with 0.1025 M HCl. If 24.69 mLof the acid was added, what is the concentration of sodiumhydroxide?
| | 63.27 M |
| | 0.6741 M |
| | 0.1012 M |
| | 0.1038 M |
| | 9.879 M |
