Describe what happens when excess dilute sulfuric acid reacts with magnesium carbonate and with magnesium oxide. State the products and any observations.
State the colour change that occurs when excess aqueous sodium hydroxide is added to a solution of litmus in dilute sulfuric acid. from … to …
Describe how universal indicator can be used to determine the pH of an acidic solution.
Choose the pH value that is acidic. Draw a circle around your answer. pH 2, pH 7, pH 10, pH 14.
Choose the reaction type that occurs: addition, neutralisation, polymerisation, reduction.
Complete the missing steps 3 and 6. 1 Add excess zinc oxide to dilute hydrochloric acid. 2 Warm the mixture to complete the reaction. 3 [BLANK]. 4 Evaporate the filtrate until the point of crystallisation and leave for crystals to form. 5 Remove the crystals. 6 [BLANK].
Complete the table by filling in the temperatures in the first column.
Describe the effect on the time taken for the reaction to finish when dilute hydrochloric acid of a higher concentration is used.