uestion Completion Status: QUESTION 1 2.5 points As described in part A of the l

Question

uestion Completion Status: QUESTION 1 2.5 points As described in part A of the lab, you are preparing a solution by adding 2.00 mL of 0.00200 M KSCN in HNO3 and 25.00 mL of 0.200 M Fe(NO3)s in HNO3 into a clean, labeled 100.00 mL volumetric flask and diluting to the 100.00 mL mark with 0.25 M HNO3. Calculate the final concentration of KSCN in HNO2. 0.00200 M 0.000400 M 0.0000400 M 0.0000315 M 0.0500 M QUESTION 2 2.5 points As described in part B of the lab, you are preparing a solution by mixing 3.00 mL of 0.00200 M KSCN in HNO2 with 5.00 mI. of 0.00200 M Fe(NO.),in uNOa and

Explanation / Answer

Ans 1 : 0.00004 M

Number of moles of KSCN = molarity x volume (L)

= 0.00200 x 0.002

= 0.000004 mol

Total volume = 100 mL or 0.100 L

Concentration = no. of mol / final volume

= 0.000004 / 0.100

= 0.00004 M

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