Introduction to Analytical Chemistry — Chemistry STD 11 Science — Question

Define: Displacement reaction.

A balloon containing 0.6 mol of helium gas has a volume of 1.5 L.
i. Assuming that the temperature and pressure remains constant, what happens to the volume of the balloon if an additional 0.6 mol of helium is added?
ii. Assuming that the temperature and pressure remains constant, what happens to the volume of the balloon if 0.3 mol of helium is removed?

Round off each of the following quantities to three significant figure :
23,642,000 mm

What is an open system?

Predict the possible products of the following reaction: bromination of phenol

Name the following:
SI unit of electric current

Name two methods of classical quantitative analysis.

What is coagulation?

Name two methods used to balance redox reactions.

Give reason: Adsorption of hydrogen on glass is an endothermic process.