CH-1598
Planning a method
Chemistry · Secondary 4 · Medium · Planning a method
In a temperature change experiment, 25.0 cm³ of 1.00 mol/dm³ hydrochloric acid at 25.0 °C is mixed with 25.0 cm³ of 1.00 mol/dm³ sodium hydroxide, also at 25.0 °C, in a polystyrene cup.
Which change would most reduce heat loss to the surroundings?
Which change would most reduce heat loss to the surroundings?
- Cover the cup with a lid during mixing
- Use a larger beaker instead of a polystyrene cup
- Stir the mixture less frequently
- Start with the solutions at different temperatures
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