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O2 having an initial oxidation state of 0 becomes -2 whenever the CaO is produced. Solve for theoretical mole ratio based on the given chemical balanced equation: 2Ca + O2 =====> 2CaO. TMR: Ca / O2 = 2/1 = 2. Enter a mass or volume in one of the boxes below. The second one is no reaction. 3 is a redox reaction… 7 1. Such a reaction does not involve redox. But on the other side you only have: Ca. Hope that helped future questions too! So the correct answer would be Ca is oxidized in this reaction. Upon hitting submit, the stoichiometric equivalents will be calculated for the remaining reactants and products. Use uppercase for the first character in the element and lowercase for the second character. The balanced equation will appear above. Hg2(NO3)2(aq) + 2NH4ClO3(aq) → Hg2(ClO3)2(aq) + 2NH4NO3(aq) Since no solid forms, no reaction occurs. Davut Melik. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. 2Na + 2H2O --> 2NaOH + H2. Ca plus SO3 2. Hope this helps! Stoichiometry. Just swap the anions around. Ca + 2H2O ---> Ca(OH)2 + 2H2. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. 5 years ago. 2 Ca (s) + 1 O2 (g) → 2 CaO (s) Back to reactions list . So you need to incorporatw your second O but you also need to make it so all the bonds are full. The charge on a calcium ion is +2 (2 valence electrons), so each calcium ion bonds with two (OH)s for the total charge to be 0. Solve for actual mole ratio by dividing moles of Ca and O2 from the given masses: AMR: Ca / O2 = (120 g / 40 g/mol) / (96 g / 32 g/mol) = 1 . The charge on a hydroxide ion (OH-) is -1. The balanced equation will appear above. Reaction Type: Synthesis. First thing to do is to find which among Ca and O2 is the limiting reactant. H2SO4 is sulphuric acid, and the HCO3 group is hydrogen carbonate. Ca metal goes from an inital oxidation state of 0 to a final oxidation state of +2. O. Therefore it is losing electrons and is oxidized. See above you have: Ca. So you need both O's and two Ca's, so you end up with. Anonymous. O2 and C6H1206 Or it could be looked at as C6H1206 is the product and O2 is the byproduct. This would be a reduction. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The first reaction is an acid-base reaction (more accurately an acid-carbonate reaction). Google has many special features to help you find exactly what you're looking for. 2Ca+O2 = 2CaO. Use uppercase for the first character in the element and lowercase for the second character. Ca + O2 = CaO . 0 0. O. O. 5 years ago. Give the following product what combination reaction and balance 1. Search the world's information, including webpages, images, videos and more. All gases are assumed to be at STP. Ca+O2=CaO.