(a)[3]
Describe any three physical properties that rhenium has.
(b)[1]
Determine the empirical formula for this chloride of rhenium.
(c)[1]
What does the term sublimation mean?
(d(i))[1]
Which one of the following pH values shows an acidic solution? pH 2, pH 7, pH 9, pH 14
(d(ii))[1]
Complete the word equation below for this reaction.\n\nperrhenic acid + potassium hydroxide $\rightarrow$ potassium perrhenate + [BLANK]
(d(iii))[1]
Which one of the following compounds reacts with perrhenic acid? ethane; hydrochloric acid; potassium carbonate; sodium chloride.
(e)[2]
Describe a test for oxygen. State the test and the result.