Class 9th · Chemistry · Chapter 7
Chapter 7: Acid Base Chemistry
Chapter 7 of the Punjab Board Class 9th Chemistry textbook runs from page 97 to 108. Its exercise has multiple choice questions. Open any of those pages in GenZ Books, tap a question, and the answer is worked from this chapter.
Open Chapter 7 of Chemistry in GenZ Books
The same Class 9th textbook, page for page. Tap any question and get the answer worked from that chapter — English and Urdu.
Exercise
- Multiple Choice Questionsp. 107
A sample answer from GenZ Books
Solve · page 108: How does calcium metal react with dilute H,SO,? Which salt is formed when HCI reacts with BaCO,?
Calcium metal reacts with dilute sulphuric acid ($\text{H}_2\text{SO}_4$) to form calcium sulphate ($ \text{CaSO}_4 $) salt and evolves hydrogen gas ($ \text{H}_2 $). The balanced chemical equation for this reaction is given by:
$$ \text{Ca}(s) + \text{H}_2\text{SO}_4(aq) \longrightarrow \textbf{CaSO}_4\text{(aq)} + \text{H}_2(g) $$
When hydrochloric acid ($\text{HCl}$) reacts with barium carbonate ($\text{BaCO}_3$), the salt formed is barium chloride ($\text{BaCl}_2$), along with the release of carbon dioxide gas and water.
AI-generated from the chapter text by GenZ Books. It can make mistakes — check it against your textbook and your teacher.