are they correct so far and can someone help me with the ones im missing. Name L

Question

are they correct so far and can someone help me with the ones im missing.

Name Lab Session 5. To the solution from 4, add 10 drops of 0.1 M KSCN solution. As a result the color of this solution changes to If an excess of thiocyanate, SCN, ions are present from the addition of KSCN, then librium F shifts Yah as a result the concentration of Fe -, and the concentration of FeSCN2 increas Why does the color change from yellow to deep red/orange? Look at the equilibrium constants (Ratio of Iproducts] over [reactants] listed, which complex exists more predominately in the form of the complex rather than the Fe, simple ion? 6. To the solution from 5, add 8 ml of IM NaF solution. As result the color of this solution changes to rnae K=1x105 If an excess of fluoride ions are present from the addition of NaF, then G shifts naht as a re?ult the concentration of Fe C concentration of FeF4 nMPOSe. The explanation for the color change is that the concentration of Fe ions is decreased from the equilibrium G shift, therefore equilibrium F shits e9 as a result the concentration of FeSCN 7. To the solution from 6, add 5 drops of 0.1 M potassium ferrocyanide solution. As a result the color of this solution changes to blark aeen

Explanation / Answer

It is correct so far.

5. The reason for color change from yellow to deep red is the increase in concentration of FeSCN2+ . This complex exist predominantly rather than Fe3+ ions.

6. missing blank is DECREASES. Since equillibrium F shifts left conc of FeSCN2+ will decrease and conc of Fe3+ will increase.

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