Chemistry · May / June 2021 · Paper 22 · Question 7
5070
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Sulfamic acid, NH2SO3H, is a white crystalline solid. It reacts with aqueous sodium nitrite to make nitrogen gas, as shown in the equation. NH2SO3H(s) + NaNO2(aq) N2(g) + H2O(l) + NaHSO4(aq)
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7(a)[2]
7(b)[2]
7(c)[3]
7(d)[3]
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