Group 1 metal carbonates react with dilute acids to form a salt, water and carbon dioxide. The identity of the metal, $$$\mathbf{M}$$$, can be determined by measuring the volume of carbon dioxide produced when excess acid is added to a known mass of the carbonate, $$$\mathbf{M}_{2} \mathbf{C O}_{3}$$$. FA 1 is the metal carbonate, $$$\mathrm{M}_{2} \mathrm{CO}_{3}$$$. FA 2 is $$$0.250 \mathrm{~mol} \mathrm{dm}^{-3}$$$ sulfuric acid, $$$\mathrm{H}_{2} \mathrm{SO}_{4}$$$. .

Chemistry

IGCSE&ALevel

CAIE

Exam No：9701_s25_qp_35 Year：2025 Question No：1(d)

Answer:

Knowledge points:

10.1.1 describe, and write equations for, the reactions of the elements with oxygen, water and dilute hydrochloric and sulfuric acids

10.1.2 describe, and write equations for, the reactions of the oxides, hydroxides and carbonates with water and dilute hydrochloric and sulfuric acids

10.1.3 describe, and write equations for, the thermal decomposition of the nitrates and carbonates, to include the trend in thermal stabilities

10.1.4 describe, and make predictions from, the trends in physical and chemical properties of the elements involved in the reactions in 10.1.1 and the compounds involved in 10.1.2, 10.1.3 and 10.1.5

10.1.5 state the variation in the solubilities of the hydroxides and sulfates

8.1.1 explain and use the term rate of reaction, frequency of collisions, effective collisions and non-effective collisions

8.1.2 explain qualitatively, in terms of frequency of effective collisions, the effect of concentration and pressure changes on the rate of a reaction

Answer:

Knowledge points:

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