Question

Match the column I with column II and mark the appropriate choice. \begin{tabular}{|l|l|l|l|} \hline \multicolumn{1}{|l|} {} & \multicolumn{1}{c|} { Column II } \\ \hline (A) & Quick lime & (i) & \(\mathrm{CaH}_{2}\) \\ \hline (B) & Slaked lime & (ii) & \(\mathrm{Ba}(\mathrm{OH})_{2}\) \\ \hline (C) & Baryta water & (iii) & \(\mathrm{Ca}(\mathrm{OH})_{2}\) \\ \hline (D) & Hydrolith & (iv) & \(\mathrm{CaO}\) \\ \hline \end{tabular} (a) \((A) \rightarrow(i),(B) \rightarrow(\) ii \(),(C) \rightarrow\) (iii), (D) \(\rightarrow\) (iv) (b) \((\mathrm{A}) \rightarrow\) (iii), (B) \(\rightarrow\) (ii), (C) \(\rightarrow\) (i), (D) \(\rightarrow\) (iv) (c) (A) \(\rightarrow\) (i), (B) \(\rightarrow\) (iii), (C) \(\rightarrow\) (iv), (D) \(\rightarrow\) (ii) (d) (A) \(\rightarrow\) (iv), (B) \(\rightarrow\) (iii), (C) \(\rightarrow\) (ii), (D) \(\rightarrow\) (i)

Short answer

The correct match is (d): (A) \(\rightarrow\) (iv), (B) \(\rightarrow\) (iii), (C) \(\rightarrow\) (ii), (D) \(\rightarrow\) (i).

Step-by-step solution

Identify Chemical Compounds

Identify the chemical name of each compound given in Column I to match them with their respective chemical formulas given in Column II.

Match Quick Lime

Quick lime is chemically known as Calcium Oxide with the formula \(\text{CaO}\). Match option (A) Quick lime with (iv) \(\text{CaO}\).

Match Slaked Lime

Slaked lime is chemically known as Calcium Hydroxide with the formula \(\text{Ca(OH)}_2\). Match option (B) Slaked lime with (iii) \(\text{Ca(OH)}_2\).

Match Baryta Water

Baryta water is a solution of Barium Hydroxide, which has the formula \(\text{Ba(OH)}_2\). Match option (C) Baryta water with (ii) \(\text{Ba(OH)}_2\).

Match Hydrolith

Hydrolith is another name for Calcium Hydride with the formula \(\text{CaH}_2\). Match option (D) Hydrolith with (i) \(\text{CaH}_2\).

Find the Correct Option

After matching all compounds with their respective chemical formulas, we find that option (d) correctly matches each compound with its formula: (A) \(\rightarrow\) (iv), (B) \(\rightarrow\) (iii), (C) \(\rightarrow\) (ii), (D) \(\rightarrow\) (i).

Key concepts

Understanding Chemical Formulas

Chemical formulas represent the composition of molecules and compounds in an easily understandable language - the language of chemistry. Think of them as a recipe that tells you exactly how many atoms of each element are in a compound. For instance, the formula for water, \( H_2O \), indicates that each molecule of water is composed of two hydrogen atoms and one oxygen atom.

In the exercise, matching the names of compounds to their formulas is crucial. It requires an understanding that each letter represents an element from the periodic table, while the numbers (subscripts) tell us how many atoms of each element are present. For example, \( Ba(OH)_2 \) denotes barium hydroxide, with one barium atom, two oxygen atoms, and two hydrogen atoms.

Remember, a correct match is not just memorizing a list but understanding the composition of the compound. Make sure to learn the symbol of each element and remember that the absence of a number indicates just one atom of that element in the compound.

Delving into Calcium Compounds

Calcium is a versatile element that forms various compounds, each with unique properties and functions. Quick lime, more formally known as calcium oxide \( (CaO) \), is a stark white powder used in many industrial processes such as the manufacture of cement.

Then we have slaked lime, or calcium hydroxide \( (Ca(OH)_2) \), which results from adding water to quick lime. This compound has many uses, from treating wastewater to serving as an ingredient in plaster. Another calcium compound, hydrolith or calcium hydride \( (CaH_2) \), is often used in laboratories to produce hydrogen gas.

Understanding calcium compounds involves not just memorizing their chemical formulas but also knowing their applications and how they interact with other substances. From construction to chemistry labs, calcium compounds are integral, and each has a distinct identity and role to play in different sectors.

Exploring Barium Hydroxide

Barium hydroxide \( (Ba(OH)_2) \) is an important compound with a variety of uses, from refining oils to manufacturing glass. A solution of this substance in water is known as baryta water, which is used in analytical chemistry to test for the presence of sulfur dioxide.

In producing barium hydroxide, barium oxide reacts with water to create \( Ba(OH)_2 \). This reaction is notable in educational laboratories where learners observe the changes that occur when elements and compounds interact.

Due to its alkaline properties, barium hydroxide plays a significant role both in industry and educational settings. Specifically, in this exercise, matching baryta water to \( Ba(OH)_2 \) helps students bridge the gap between chemical names and formulas, promoting a deeper understanding of chemical identities and their real-world implications.