Which statement describes the properties of hydrochloric acid?

A.
Carbon dioxide is produced when limestone reacts with hydrochloric acid.
B.
Hydrogen is produced when sodium hydroxide reacts with hydrochloric acid.
C.
Methyl orange turns yellow in strong hydrochloric acid.
D.
Red litmus paper turns blue when dipped into hydrochloric acid.
Chemistry
IGCSE&ALevel
CAIE
Exam No:0620_m24_qp_22 Year:2024 Question No:22

Answer:

A

Knowledge points:

8.1.1. Describe the Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number / atomic number
8.1.2. Describe the change from metallic to non-metallic character across a period
8.1.3. Describe the relationship between group number and the charge of the ions formed from elements in that group
8.1.4. Explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configuration
8.1.5. Explain how the position of an element in the Periodic Table can be used to predict its properties
8.1.6. Identify trends in groups, given information about the elements

Solution:

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