The theory of plate tectonics states that the outer layer of Earth is divided into large, rigid blocks called plates. What could happen that may lead to a change in this theory? Scientists discover new information about Earth's layers.
Scientists begin observing Earth's outer layer.
Scientists update their opinion of the theory.
Scientists revise the definition of theory so that it fits with what they believe.

Cr(oh)3 -> cr(3+) + 3oh-

Answer-ide.

The reaction 2kalsi3o8 + 2(h+ + hco3-) + h2o  →  al2si2o5(oh)4 + 2k+ + 2hco3- + 4sio2 shows that feldspar kalsi3o8 is chemically altered by hydrolysis to form chalky-looking clay mineral kaolinite al2si2o5(oh)4. the chemical breakdown of potassium feldspar due to exposure to acidic water results to the mineral binding with the water molecule to become kaolinite with silica and potassium and bicarbonate ions in solution.