What is the chemical equation for Calcium Hydroxide?

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The chemical equation for Calcium Hydroxide is Ca(OH)_2.Calcium hydroxide is an inorganic compound that is also known as slaked lime.

It is a colourless crystal or a white powder that is obtained when calcium oxide is mixed with water.
Calcium hydroxide is formed by the combination of a Calcium cation (Ca²⁺) and two OH⁻ anions, hence its chemical formula is Ca(OH)₂.
Calcium is in group 2 of the periodic table – hence it has 2 valence electrons it must lose in order to be stable.
Oxygen is in group 6 – hence, it needs to gain 2 electrons to be stable.
Oxygen gets one electron from a hydrogen atom and forms a hydroxide (OH⁻) anion.
Now the atom needs just one more electron, while calcium offers two.
Therefore, two OH⁻ groups combine together to form calcium hydroxide and each hydroxide group gets one electron from calcium giving the chemical formula Ca(OH)₂.

Calcium Hydroxide

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Oxides of Nitrogen	Milk Of Magnesia	Calcium Chloride
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CBSE CLASS XII Related Questions

1.
Consider the decomposition of hydrogen peroxide \( (\mathrm{H_2O_2}) \) as per the equation given below : \[ 2\mathrm{H_2O_2} \xrightarrow[\text{Alkaline medium}]{I^-} 2\mathrm{H_2O} + \mathrm{O_2} \] The mechanism for this reaction was found to be : Step I : \( \mathrm{H_2O_2} + I^- \longrightarrow \mathrm{H_2O} + IO^- \) (slow) Step II : \( \mathrm{H_2O_2} + IO^- \longrightarrow \mathrm{H_2O} + I^- + \mathrm{O_2} \) (fast) (a) Write the rate law expression. (b) Determine the order of reaction with respect to \( \mathrm{H_2O_2} \), \( I^- \) and overall order of reaction. (c) What is the molecularity of the reaction in Step II ?
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2.
Match Column I with Column II and choose the correct option :
Column I Column II
a. Osmotic pressure i. \( \Delta \mathrm{T_f} = \mathrm{K_f}\,m \)
b. Elevation of boiling point ii. \( \pi = CRT \)
c. Depression of freezing point iii. \( \frac{\mathrm{P_1^0 - P_1}}{\mathrm{P_1^0}} = \frac{\mathrm{W_2 \times M_1}}{\mathrm{M_2 \times W_1}} \)
d. Relative lowering of vapour pressure iv. \( \Delta \mathrm{T_b} = \mathrm{K_b}\,m \)

a-i, b-ii, c-iii, d-iv
a-ii, b-i, c-iii, d-iv
a-iv, b-iii, c-ii, d-i
a-ii, b-iv, c-i, d-iii

3.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.
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4.
Write the reactions taking place at anode and cathode in a lead storage battery, when it is in use.
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5.
Draw the structures of major monohalo products in each of the following :
(a)
(b)
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6.
A reaction \( \mathrm{A \rightarrow B} \) follows second order kinetics. How will the rate of reaction be affected if the concentration of (i) A is increased by three times, and (ii) A is reduced to half ?
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