Hydrochloric acid, HCl\text{HCl}HCl, reacts with calcium, Ca\text{Ca}Ca.
Calcium chloride and hydrogen are made.
What is the balanced symbol equation for this reaction?
2HCl+Ca→CaCl+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}_22HCl+Ca→CaCl+H2
2HCl+Ca→CaCl+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl} + \text{H}2HCl+Ca→CaCl+H
2HCl+Ca→CaCl2+H22\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}_22HCl+Ca→CaCl2+H2
2HCl+Ca→CaCl2+H2\text{HCl} + \text{Ca} \rightarrow \text{CaCl}_2 + \text{H}2HCl+Ca→CaCl2+H
Practise OCR GCSE Chemistry Introducing chemical reactions with exam-style questions for Foundation and Higher tier. 61 questions, matched to the OCR GCSE Chemistry (J248) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.