1. If 14.95 mL of a 0.1250 M HCl solution is added to reach the endpoint...

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Chemistry

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 Ã— 10^â€“4 M
3.25 Ã— 10^â€“2 M
8.12 Ã— 10^â€“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

Answer & Explanation Solved by verified expert

4.0 Ratings (695 Votes)

Ans 1 Correct option is 0001869 moles Explanation Number of moles of HCl Volume of HCl L x Molarity of HCl solution Number of moles of HCl 1495mL x 1L1000mL x 01250 M Number of moles of HCl 0001869 mol Ans 2 Correct answer is 2 Explanation The smallest gradation on burette See Answer

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		0.001869 moles
		0.008361 moles
		8.361 moles
		0.1196 moles
		1.869 moles

		3
		can only be read to the ones place - so no decimal places
		2
		4
		1

		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

		5.08 Ã— 10^â€“4 M
		3.25 Ã— 10^â€“2 M
		8.12 Ã— 10^â€“3 M
		0.406 M
		1.27 M