Limestone is a sedimentary rock composed primarily of _________
Calcium Carbonate
Limestone is a sedimentary rock composed primarily of calcium carbonate \(\left(\text{CaCO}_3\right)\), mostly in the mineral form of calcite. It forms either organically, from accumulated shells and skeletons of marine organisms such as corals, molluscs and foraminifera, or inorganically by direct precipitation from calcium-rich water.
Sodium chloride forms rock salt (halite), sodium bicarbonate is baking soda, and nitrogen oxides are gaseous pollutants — none of these forms limestone.
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Important Questions from Equilibrium
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Which species acts as acid like behaviour in the following reaction?
\(HPO_4^{2-}+NH_4^{1+}\rightarrow H_2PO_4^{1-}+NH_3\)
Aqueous solution of CH 3COONa is:
pH of a neutral solution is ___________.
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