1. a) 2H⁺(aq) + MgCO₃(s) → Mg²⁺(aq) + H₂O(l) + CO₂(g) b) (1) Add equal masses of magnesium carbonate separately to excess and equal volumes of the sulphuric acid and sulphurous acid. (2) The acid that gives...
1. (a) Carbon dioxide with dilute sodium hydroxide : 2N aOH(aq) + CO2(g) → N a2CO3(aq)+ H2O(l) When carbon dioxide is in excess : N a2CO3(aq) + CO2(g) + H2O(l) → 2N aHCO3(aq) Carbon...
(a) oxygen (b) silver (c) hydrogen (d) sodium or potassium (e)(i) Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) (e)(ii) Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s) (f) Only the oxide of metal A decomposes on heating to give metal...
(1) H2SO4 + 2N aOH → N a2SO4+ 2H2O No. of moles of H2SO4 added = 1 × (10/1000) = 0.01 mol No. of moles of N aOH added = 0.5 × (30/1000) = 0.015 mol When 0.015 mol of N...
1. Observable change : A colour gas is given off. Equation : MgCO3 + 2HCl →MgCl2 + H2O + CO2 ==== 2. (i) CuCO3 + H2SO4 →CuSO4 + H2O + CO2 (ii) This...
...ve added the sodium hydrogencarbonate solution in previous step, you should repeat the experiment without noodle (so-called "Blank"), see how much acid is...
I think you have a fundamental misconception in "logic" or meanings of English. Burning is "a form" of combustion means there are many types of "Combustion" and buring is only one type of combusion. "...
I think you are asking for the symbol "⇌" used in the equation of partial dissociation. The symbol "⇌" represents that the reaction is reversible and finally a state of equilibrium is reach. For example, consider the partial dissociation of ethanoic...
