Skip to content

Course home

1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950
Question 46

Much of the carbon dioxide present in the Earth's early atmosphere dissolved into the oceans, leading to the formation of minerals such as calcium carbonate, CaCO3\text{CaCO}_3CaCO3​.

Some of this calcium carbonate slowly reacted with dissolved manganese ions to form the mineral kutnohorite, CaMn(CO3)2\text{CaMn}(\text{CO}_3)_2CaMn(CO3​)2​.

Complete the ionic equation for the reaction of calcium carbonate with manganese ions.

.....CaCO3+.....→CaMn(CO3)2+Ca2+ \text{.....}\text{CaCO}_3 + \text{.....} \rightarrow \text{CaMn}(\text{CO}_3)_2 + \text{Ca}^{2+} .....CaCO3​+.....→CaMn(CO3​)2​+Ca2+
[2]
Markscheme

1.1 Formulae, equations and hazards Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 Formulae, equations and hazards

230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank