When aluminum replaces up to half of the silicon atomsin SiO2, a mineral class called feldspars result. The feldspars are the most abundant rock-forming minerals, comprisingabout 50% of the minerals in Earth’s crust. Orthoclase is afeldspar in which Al replaces one-fourth of the Si atoms ofSiO2, and charge balance is completed by K+ ions. Determinethe chemical formula for orthoclase.

When aluminum replaces up to half of the silicon atomsin SiO2, a mineral class called feldspars result. The feldspars are the most abundant rock-forming minerals, comprisingabout 50% of the minerals in Earth’s crust. Orthoclase is afeldspar in which Al replaces one-fourth of the Si atoms ofSiO2, and charge balance is completed by K+ ions. Determinethe chemical formula for orthoclase.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter22: Inorganic Materials

Section: Chapter Questions

Problem 38AP

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