A zinc chloride solution (ZnCl2) is prepared by reacting zinc carbonate with dilute hydrochloric acid, write the balanced equation for this reaction
ZnCO3 + 2HCl --> ZnCl2 + H2O + CO2
Student must be aware of the formula for a carbonate (CO3) and how to balance the equation. I leave the balancing to the end to make sure I have written the equation correctly otherwise it is easy to confuse yourself.
SD
Related Chemistry GCSE answers
All answers ▸85 cm^3 of 0.05 mol/dm^3 sulfuric acid is used to neutralise 15 cm^3 of sodium hydroxide of an unknown concentration. Given that the chemical formula of the reaction is 2NaOH + H2SO4 => NA2SO4 + 2H2O, find the concentration of the sodium hydroxide.
Explain why chlorine (Cl2) is a gas at room temperature, but sodium chloride (NaCl) is a solid at room temperature.
What is the difference between an ionic bond and a covalent bond?
How do enzymes affect the rate of reaction?