Concentrated Purple

d block related question?

(A) reacts with H2SO4 to form purple coloured solution (B) which reacts with KI to form colourless compound (C). The colour of (B) disappears with acidic solution of FeSO4. With concentrated H2SO4 (B) forms (D) which can decompose to give a black compound (E) and O2. Identify (A) to (E) and write equations for the reactions involved.

Not sure, but here goes

A is KMnO4 (Solid)

A in H2SO4 solution

2KMnO4 + H2SO4 –> 2HMnO4 + K2SO4

solution of KMnO4 in H2SO4 is purple colored solution (B)

to form (c)

2KMnO4 + 10KI + 8H2SO4 —> 6K2SO4 + 2 MnSO4 + 5i2 + 8H2O

Colorless compound C is K2SO4

FeSO4 will decolorize (b)

With Concentrated H2SO4, KMnO4 can form Mn2O7 (D)

2KMnO4 + H2SO4 –> K2SO4 + Mn2O7 + H2O

Mn2O7 can decompose to give MnO2 (E) and O2

2Mn2O7 –> 4MnO2 + 3O2

I believe that does it.

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Oxycodone is a drug used to control moderate to severe pain and, like a cough medicine. Many people start taking prescription medication oxycodone as and eventually become addicted. When continuously exposed to oxycodone, the body develops tolerance to the drug. The person who requires high doses of each time to achieve the same feeling Relaxation, satisfaction, euphoria, and high. Oxycodone addiction leads to seizures, dizziness, slow breathing, and coma. Finding the presence of drugs oxycodone with urine drug testing is one of the most convenient, easy, reliable and cost effective.

Specimen Collection
The urine sample must be tested for the presence of drugs oxycodone should be collected in a clean, dry, and unwavering no leaks. Urine samples should handled with care, because there is a risk of contracting a urinary tract infection. A new container should be used whenever the urine sample for the new to prevent contamination sample. If the test is done later, urine samples can be stored at 2-8 degrees centigrade for 48 hours or below -20 degrees Celsius for longer period. If the solid particles seen in the urine sample, then you must be centrifuged, filtered, and allowed to set for obtain clear specimen for testing.

How to test
Laboratories use Immunoassay (IA) technique for detection initial urine sample for the presence of oxycodone. The urine sample and a test device should be at room temperature before testing. The bottom of the test strip must be inserted into the urine sample and care must be taken that the level of the sample is inside the blue area of the test. The testing device must be maintained until the reddish purple lines are inserted in the area of test results. When these lines appear, remove the test strip, and lay flat on surface non-absorbent. The test results can be read in just 3-5 minutes.

Interpretation of results
The results can be read on the lines appear reddish-purple in the control region [C] and the region of the test [T]. Results are considered as negative when a red-purple line appears in the control region [C] and a reddish purple line appears in the test region [T]. Results even if the reddish color of the two lines purple in the control region and test region is the light, must be regarded as negative. The negative result indicates that oxycodone is presented below cut concentration of 100 ng / ml. The result should be interpreted as positive when a line appears in the control region [C] and no line appears in the test region [T]. Positive result shows that the oxycodone is present in the sample above the cut-off concentration of 100 ng / ml. The result is considered as invalid if it is not the line of control in the region of [C] and the region of the test [T], even after 10 minutes. In this case, testing should be performed with new strip. The result should also be considered as valid if a line appears in the region of the test [T] and no line appears in the region control [C].

The positive result in urine drug tests show the preliminary results of analysis. More advanced techniques such as chromatography gas / mass spectrometry can be used for confirmation. A positive result can not display the level of drug concentration and route of administration. Whereas negative result indicates that the drug is present below cutoff level of concentration and not entirely drug-free urine.

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