Question

2
A student put 25.0 cm of dilute hydrochloric acid into a conical flask.
The student added 2.5g of solid sodium carbonate and measured the change in temperature of
the mixture.
Which apparatus does the student need to use to obtain the most accurate results?
A balance, measuring cylinder, thermometer
B balance, pipette, stopwatch
C balance, pipette, thermometer
D
burette, pipette, thermometer

Answer 1

Answer:

A balance, measuring cylinder, thermometer

Explanation:

In this experiment, three things are really required and they are;

1. A balance
2. Measuring cylinder
3. Thermometer

A balance is used to measure out the mass of 2.5g of solid sodium carbonate.

A measuring cylinder is used to measure out the 25.0 cm of dilute hydrochloric acid into a conical flask.

Lastly, a thermometer is used to monitor the change in temperature.