Question

1. if you need to mix water and acid, what is the proper way to mix them?

slowly add water to acid
add acid to water slowly
add both at the same time
it doesnt matter which you add first

1. which instruments are the most accurate for measuring liquids?

pipettes and burettes
graduated cylinder
beaker
mug

Explanation:

• Question 5: When mixing water and acid, adding acid to water slowly is correct. This is because when acid is added to water, the water can absorb the heat generated by the exothermic reaction (mixing acid and water releases heat). If water is added to acid, the small amount of water can boil and splash the acid, which is dangerous.
• Question 6: Pipettes and burettes are designed for precise measurement of liquid volumes. Graduated cylinders have less precision compared to pipettes and burettes. Beakers and mugs are not made for accurate liquid - volume measurement; they are more for holding or rough - volume estimation.

Answer:

1. Add acid to water slowly
2. pipettes and burettes