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andreev551 [17]
2 years ago
7

The satellite photograph shows an area in Alaska after a fire occurred. Which statement best describes the most likely effect th

e fire had on the river in the 12 months after it occurred
Chemistry
2 answers:
Nitella [24]2 years ago
5 0

Answer:

bad stuff such as ashes and chemicals in the air from that fire could bring bad stuff to the water

Explanation:

Nataly [62]2 years ago
3 0

Answer:

all of the bad stuff such as ashes and chemicals in the air from that fire could bring bad stuff to the water

Explanation:

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Identify some other substances (besides KCl) that might give a positive test for chloride upon addition of AgNO3. Based on the r
SashulF [63]

Answer:

Other substances that give a positive test with AgNO3 are other chlorides present, iodides and bromide. However iodides and bromides have different colours hence they will not give a false positive test for KCl. Other chlorides present may lead to a false positive test for KCl.

Explanation:

In the qualitative determination of halogen ions, silver nitrate solution is used. Various halide ions give various colours of precipitate with silver nitrate. Chlorides yield a white precipitate, bromides yield a cream precipitate while iodides yield a yellow precipitate. All these ions or some of them may be present in the system.

However, if other chlorides are present, they will also yield a white precipitate just as KCl leading to a false positive test for KCl. Since other halogen ions yield precipitates of different colours, they don't lead to a false test for KCl. We can exclude other halides from the tendency to lead us to a false positive test for KCl but not other chlorides.

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