Chemistry · Oct / Nov 2025 · Paper 21 · Question 3
5070
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The question as text
Sodium hydrogencarbonate decomposes when heated. 2NaHCO3(s) Na2CO3(s) + H2O(g) + CO2(g)
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Show the answer and mark scheme
3(a)(i)[2]
3(a)(ii)[1]
3(b)[1]
3(c)[3]
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