Module 1

Question 1

Plan how the student could prepare a 250 cm3 of standard solution

Answer 1

Dissolve (x)g of the solid in distilled water (less than 250 cm3) in a beaker.
Then transfer the solution to a 250 cm3 volumetric flask AND
ensure that all solution is washed out of beaker (washings
transferred to volumetric flask).
Then make solution up to 250 cm3 with distilled water AND
ensure thorough mixing by inverting the flask several times.

Question 2

Spell the bubbling word

Answer 2

Effervescence