(a(i))[1]
Which positive ion has the lowest concentration?
(a(ii))[1]
What is the name of the compound made from K$^+$ and Cl$^-$ ions?
(a(iii))[1]
Calculate the mass of potassium ions in 200 cm$^3$ of this blood plasma.
(a(iv))[1]
As the 1000 cm$^3$ blood plasma sample is crystallised, several compounds are produced. Suggest the name of the compound that would form the largest mass of crystals.
(b)[2]
Describe how to test for potassium ions. test … result …
(c)[1]
Which one of the following substances is also found in food? Circle the correct answer. carbohydrate, hematite, poly(ethene), terylene.
(d(i))[1]
On the structure, circle the alcohol functional group.
(d(ii))[1]
Deduce the molecular formula of compound S, showing how many carbon, hydrogen, oxygen and nitrogen atoms it contains.