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ANTONII [103]
3 years ago
6

What happens when bluevitoal is heated?​

Chemistry
1 answer:
Anna [14]3 years ago
4 0
When blue vitriol is heated, those water of crystallization escape out of the crystal and what's left is anhydrous copper sulphate or simply CuSO4, without any water of crystallization.
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How many moles of carbon are in 7.87x10^7 carbon molecules?
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Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette sm
Luda [366]

Answer:

pH of the solution = 9.45

Explanation:

pKb = 8.57

pKb = -logKb

Kb = antilog pkb

K_b = 1.78 \times 10^{-9}

ICE table for the ionization of pyrodine is:

C_5H_5N+H_2O \leftrightharpoons C_5H_5NH^+ + OH^-

initial  0.435                         0   0

equi.    0.435 - x                   x   x

so,

k_b =\frac{ [C_5H_5NH^+][OH^-]}{[C_5H_5N]}\\1.78\times 10^{-9}=\frac{x^2}{0.453 - x}

As kb is very less that means there is very less ionization, hence x can be ignored as compared to 0.435

x^2 = 1.78\times 10{-9} \times 0.435\\x= 2.78\times 10^{-5}

pOH = -log[OH-]

pOH = -log[2.78\times 10^{-5}]\\=4.55

pH = 14 - pOH

     = 14 - 4.55

     = 9.45

5 0
4 years ago
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