(a)[2]
Describe the colour that methyl orange shows in acidic and alkaline solutions. in acidic solution in alkaline solution
(b)[2]
Complete the word equation for the reaction of hydrochloric acid with calcium oxide. hydrochloric acid + calcium oxide → [BLANK] + [BLANK]
(c)[1]
Give one use of lime.
(d(i))[1]
State the meaning of the term exothermic.
(d(ii))[1]
Explain how the energy level diagram indicates that this reaction is exothermic.