Table 22
Refer to These Reactions to Answer the Question Below

question 20

Multiple Choice

Table 2.2
Refer to these reactions to answer the question below.

$\begin{array}{l}\mathrm{NaOH} \rightleftharpoons \mathrm{Na}^{+}+\mathrm{OH}^{-}-\text {base } \\ \mathrm{HF} \rightleftharpoons \mathrm{H}^{+}+\mathrm{F}^{-}-\text {acid } \\ \mathrm{MgSO}_{4} \rightleftharpoons \mathrm{Mg}^{2+}+\mathrm{SO}_{4}^{2-} \text { - salt } \\ \mathrm{KH}_{2} \mathrm{PO}_{4} \rightleftharpoons \mathrm{K}^{+} \mathrm{H}_{2} \mathrm{PO}_{4}^{-} \text {- acid } \\ \mathrm{H}_{2} \mathrm{SO}_{4} \rightleftharpoons 2 \mathrm{H}^{+}+\mathrm{SO}_{4}^{2-} \text { - salt }\end{array}$

-Which of the following is not true about the reactions in Table 2.2?

• A) They are exchange reactions.
• B) They occur when the reactants are dissolved in water.
• C) They are ionization reactions.
• D) They are reversible reactions.
• E) They are dissociation reactions.

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Definitions:

Sensitivity

The ability to perceive or feel things deeply, often used in reference to emotional or physical stimuli.

Twenty-third Pair

Refers to the last pair of human chromosomes, which determine an individual's sex: XX for females and XY for males.

Chromosomes

Thread-like structures located inside the nucleus of animal and plant cells, made of protein and a single molecule of DNA, carrying genetic information in the form of genes.

Sex of Child

Refers to the biological designation of a child as male or female, often determined at birth based on physical anatomy.