Solids W, X, Y and Z are compounds of two different Group II metals. Some of their applications are described below. Compound W is used as a refractory lining material in kilns. Compound X is used as a building material. It can also be heated in a kiln to form compound Y. When Y is hydrated, it forms compound Z which is used agriculturally to treat soils. Which statements about these compounds are correct? 1 Adding W to water has less effect on pH than adding Y. 2 Adding Z to soil increases the pH of the soil. 3 The metallic element in Y reacts with cold water more quickly than the metallic element in W.

Why does barium react more rapidly with cold water than magnesium does?

Z is an anhydrous compound of a Group 2 element. When it is heated, Z undergoes thermal decomposition to produce two …

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Sodium, magnesium and aluminium are three elements in Period 3 of the Periodic Table. Each element forms an oxide. Wh…