Chemistry Concentration

Choose the correct reagents to test the presence of chloride anion, Cl^-

• Barium chloride, BaCl₂

• Iron (II) sulphate, Fe₂SO₄

• Silver nitrate, AgNO₃

• Nitric acid, HNO₃

Explain the effects of lower concentration of solution towards the rate of reaction.

• More number of particles per unit volume

• Frequency of effective collision decreases

• Less number of particles per unit volume

• Frequency of collision increases

Tags

NGSS.HS-PS1-5

Which of the following is a pungent gas that reacts with ammonia, NH₃ to produce a white fume?

• Chlorine, Cl₂

• Hydrogen chloride, HCl

• Nitrogen dioxide, NO₂

• Sulphur dioxide, SO₂

What could be the salt shown in the diagram?

• Sodium carbonate

• Copper (II) sulphate

• Iron (II) sulphate

• Iron (III) nitrate

Tags

NGSS.HS-PS1-3

Titration curves can be used to calculate an unknown

Tags

NGSS.HS-PS1-5

Which reaction order is represented in the graph?

• Zero

• First

• Second

The graph represents...

• Reaction Rate

• Chemical Equilibrium

• Spectroscopy

• Calibration Curve

Tags

NGSS.HS-PS1-5

What is the concentration of a solution if 2 moles of solute are dissolved in 1 liter of solution?

• 1 M

• 2 M

• 0.5 M

• 4 M

Which of the following methods can be used to increase the concentration of a solution?

• Adding more solvent

• Evaporating some solvent

• Adding a non-volatile solute

• Cooling the solution

In a titration experiment, what is the purpose of using an indicator?

• To increase the concentration of the solution

• To decrease the concentration of the solution

• To determine the endpoint of the reaction

• To neutralize the solution