Analysis＞Neutralization of Acid by Yellow Sand
The season when yellow dustPhenomenon which yellow dust cover the sky
and convect downward in northwestern area of China.
It come into being frequent around March to May. falls,rain pH becomes up(neutralize).
Its cause is calcium carbonate
Carbonates of calcium.
It is reactive with strong acid to form carbon dioxide. contained in the yellow dust.
Calcium carbonate is unable to dissolve in water,but it can dissolve in carbon dioxide.
Making icicle along of dissolved concrete is same as it,calcium carbonate in concrete dissolves and
grow down to below by return to calcium carbonate again.
