DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ2.2e.ii
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.hl.TZ2.2e.ii |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Formulate | Question number | e.ii | Adapted from | N/A |
e.ii.
[Maximum mark: 1]
18M.2.hl.TZ2.2e.ii
Graphing is an important tool in the study of rates of chemical reactions.
(e.ii)
Formulate the equation for the reaction of one of the acids produced in (e)(i) with calcium carbonate.
[1]
Markscheme
2HNO2(aq) + CaCO3(s) → Ca(NO2)2(aq) + CO2(g) + H2O(l)
OR
2HNO3(aq) + CaCO3(s) → Ca(NO3)2(aq) + CO2(g) + H2O(l)
[1 mark]
