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zavuch27 [327]
3 years ago
9

Why leather gets hardered after tanning​

Chemistry
1 answer:
DIA [1.3K]3 years ago
4 0

Answer:

Mutual coagulation takes place

Explanation:

Leather gets hardened after tanning​ because mutual coagulation takes place.

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Which one of the following is not an agent of chemical weathering?
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its proprionic acid which do not cause any hazardous effect on environment it only effect internal body of human if it is ingested.

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At 100 degrees Celsius, the ion product for pure water is Kw= 51.3*10^-14. What is the pOH of water at this temperature? A) 7.00
Levart [38]

7.86 is the pOH of water at this temperature of 100 degrees celsius.

Option E is the right answer.

Explanation:

Data given:

Kw = 51.3 x 10^{-14}

pOH = ?

we know that pure water is neutral and will have pH pf 7.

The equation for relation between Kw and H+ and OH- ion is given by:

Kw = [H+] [OH-}

here the concentration of H+ ion and OH- ion is equal

so, [H+]= [OH-]

Putting the values in the equation of Kw

pKw = -log[Kw]

pKw = -log [51.3 x 10^{-14}]

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since H+ ion OH ion concentration is equal the pH of water is half i.e. 6.14

Now, pOH is calculated by using the equation:

14 = pOH + pH

14- 6.14 = pOH

pOH = 7.86

8 0
2 years ago
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