BSC104/FSC107 Quiz

Flammable materials such as Ethanol and Methanol, should never be dispensed or used near ____

• Another student

• An open flame

• An open door

• A class

All chemical waste should be ___

• Keep in the glassware without washing

• Dumped in the sink

• Taken home

• Disposed according to instructor's direction

If a solution turns red when 2 drops of methyl orange was added, it indicates ___

• An acid

• A base

• A neutral

A sample of potassium hydroxide (in conical flask) is titrated with a nitric acid solution (in burette). Choose the correct titration curve for the titration.

• 
• 

What is the reading on this burette?

• 24.10 mL

• 25.00 mL

• 24.20 mL

• 24.30 mL

Calculate the concentration (in molarity) of Sulphuric acid (H₂SO₄) solution if 155.0 mL of the solution are needed to neutralize 38.0 mL of 0.75 M sodium hydroxide (NaOH) solution.

• 0.3677 M

• 0.1838 M

• 0.0460 M

• 0.0919 M

If a laboratory fire erupts, immediately ___

• Notify your instructor

• Throw water on the fire

• Open the windows

Choose indicator for titration of sodium hydroxide and citric acid.

• phenolphthalein

• KMnO₄

• methyl orange

Provide equation of neutralization reaction between sodium carbonate and hydrochloric acid

The substance formed from a neutralisation reaction between an acid and a base is _____ and _____.