Question
How the electrons was discovered? Explain
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Answer
SELF
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The ionization constant of acetic acid is $1.74 \times 10^{–5}$. Calculate the degree of dissociation of acetic acid in its $0.05M$ solution. Calculate the concentration of acetate ion in the solution and its pH.
→Explain the following: Why does the element silicon, not form a graphite like structure whereas carbon does.
Direction: Match Column I with Column II.
→|
S. No.
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Column I
|
S. No.
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Column II
|
|
(a)
|
$\text{BF}^-_4$
|
(i)
|
Oxidation state of central atom is +4
|
|
(b)
|
$AlCl_3$
|
(ii)
|
Strong oxidising agent
|
|
(c)
|
$SnO$
|
(iii)
|
Lewis acid
|
|
(d)
|
$PbO_2$
|
(iv)
|
Can be further oxidised
|
|
|
|
(v)
|
Tetrahedral shape
|
Equal volumes of $0.002M$ solutions of sodium iodate and cupric chlorate are mixed together. Will it lead to precipitation of copper iodate? (For cupric iodate $K_{sp} = 7.4 \times 10^{–8}$).
→A compound on analysis found to contain following percentage composition:
$Na = 43.4\%, C = 11.4\%$ and $O = 45.3\%$. Determine the empirical and molecular formulae.
Given: the relative molecular mass of the compound is $106$.
→$Na = 43.4\%, C = 11.4\%$ and $O = 45.3\%$. Determine the empirical and molecular formulae.
Given: the relative molecular mass of the compound is $106$.
The figure given below represents pV diagram of different stages of a thermodynamic process. Calculate the work done in each stage and also the net work done in the complete cyclic process.
Explain structures of diborane.