2 oxygen,4 hydrogen, 4 hydrogen, and 2 oxygen so overall 12
2H2O2 ==> 2H2O + O2 the equation is balanced
NO!!! 2H2 means that there are four ( 2 x 2) hydrogen atoms , in two molecules each of two atoms. Similarly 2O2 means that there are four ( 2 x 2) oxygen atoms , in two molecules each of two atoms. However, 2H2O means H2O + H2O . Each H2O is H-O-H plus H-O-H This means that there are 4 hydrogen atoms , but only 2 oxygen atoms. So a reaction is 2H2 + 2O2 = 2H2O + O2 ( 2 oxygen atoms (O=O) remain unused). More correctly this would be written as 2H2(g) + O2(g) = 2H2O(l)
2H2O--->2H2 + O2 is a redox reaction because electrons are exchanged during electrolysis.
O2(g)+2H2(g) -> 2H2O(g) (Remmeber heat/energy must also go into the reaction.) 2H2 + O2 ---> 2H2O
The balanced chemical equation is 2H2 + O2 → 2H2O. This means that the coefficients are 2, 1, and 2, respectively.
2H2O2 ==> 2H2O + O2 the equation is balanced
Water can be broken down to oxygen and hydrogen and hydrogen can be ignited in oxygen to form water. 2H2O --> 2H2 + O2 (takes energy) 2H2 + O2 --> 2H2O (releases energy)
NO!!! 2H2 means that there are four ( 2 x 2) hydrogen atoms , in two molecules each of two atoms. Similarly 2O2 means that there are four ( 2 x 2) oxygen atoms , in two molecules each of two atoms. However, 2H2O means H2O + H2O . Each H2O is H-O-H plus H-O-H This means that there are 4 hydrogen atoms , but only 2 oxygen atoms. So a reaction is 2H2 + 2O2 = 2H2O + O2 ( 2 oxygen atoms (O=O) remain unused). More correctly this would be written as 2H2(g) + O2(g) = 2H2O(l)
2H2 + O2 ---> 2H20 is balanced when total numbers of atoms of EACH element seperately are equal on both sides ('Reactant' and 'Product' side): Left (2x H2=) 4 H atoms and (1x2 O=) 2 O atoms Right (2x H2=) 4 H's and (2x1 O=) 2 O's
4
2h2 + o2 -> 2h2o All letters capitalized!!
2H2O--->2H2 + O2 is a redox reaction because electrons are exchanged during electrolysis.
2h2 + o2 ----> 2h2o
No, chemical reactions can be reversed. For example: 2H2O -> 2H2 + O2 can change back, 2H2 + O2 -> 2H2O
= H2+O2 =2H2+O2=2H2O
O2(g)+2H2(g) -> 2H2O(g) (Remmeber heat/energy must also go into the reaction.) 2H2 + O2 ---> 2H2O
They are reversible reactions. 2H2 + O2 ----> 2H2O (formation of water) 2H2O ----> 2H2 + O2 (decomposition of water)