There are 7 C atoms on the left-hand side, so we need 7 C atoms on the right-hand side. Add a 7 in front of the CO2...7CO2+H2O on right side now.
We have fixed 16 H atoms on the left-hand side, so we need 16 H atoms on the right-hand side. Add an 8 in front of H2O to make 16 (8x2)...7CO2+8H2O on right side now.
There are 22 O atoms on the right-hand side: 14 from the CO2 and 8 from the H2O. Add an 11 in front of the O2 on the left side to make 22 (11x2).
Every formula now has a fixed coefficient. You should have a balanced equation of...
2) Unbalanced equation: Ca + O2 (g) -> CaO
3) Balanced equation: 2Ca + O2 (g) -> 2CaO
Titanium reacts slowly with oxygen at high temperatures in the presence of air to form Titanium dioxide.
The reaction is slow due to the resistance of the metal itself to corrosion which forms a layer to decrease the action of oxygen.
The balanced chemical reaction is the following:
a) Sodium has one valence electron so it does not form a strong metallic bond. Sodium has a large atomic size. Therefore, because of its one valance electron and its relatively larger size, Na is a soft metal. Na is also highly reactive and it is never found naturally on earth.
Sodium reacts vigorously with water to form sodium hydroxide and hydrogen gas.
2Na + 2H₂O → 2NaOH + H₂
b) As per the activity series of metals:
K > Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > H > Cu > Hg > Ag > Au
Mg is more reactive than Ag. Ag is a noble metal and does not react with 1M HCl
Mg reacts with HCl to form magnesium chloride and water.
Mg + 2HCl → MgCl₂ + H₂
c) Silver reacts with concentrated nitric acid to form silver nitrate, nitrogen dioxide and water.
Ag + 2HNO₃ → AgNO₃ + NO₂ + H₂O
d) When 1M HCl is added to solution c. One of the products of solution c is AgNO₃. So AgNO₃ will react with HCl to form a white precipitate of AgCl and nitric acid.
AgNO₃ + HCl → AgCl + HNO₃
Reagents: Water , 1.0 M HCl, Conc.
Metal-1 = Magnesium
Metal-2 = Sodium
Metal-3 = Silver
a) Out of these three metals sodium is a soft metal which can be easily cut with help of knife.Sodium metal reacts violently with water to form hydrogen gas and sodium hydroxide.
b) Out of magnesium and silver, magnesium metal reacts readily with HClto form magnesium chloride and hydrogen gas. Where as silver being noble metal doesn't get attacked by the HCl.
c) Silver is a noble metal. And noble metals only react with concentrated that is nitric acid.
d) When few drops of HCl were added to the solution of silver and. This will leads to the formation of nascent chloride which reacts with silver metal present in the solution to give silver chloride.
In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:
2 Ca + O2 ---> 2CaO
The balanced chemical equation for the reaction that occurs when titanium metal undergoes combination reaction with oxygen is;
Further Explanation: Chemical equations Chemical equations are equations showing reactions between reactants to form products. Chemical equations show the reactants or starting substances and products or substances formed during the reaction. Law of conservation of mass The law of conservation requires that when writing chemical equations, the mass of the reactants should be equal; to the mass of the products. This is done by making sure the number of atoms of each element involved in the chemical equation is equal on both sides of the equation. To ensure the law of conservation in chemical equations is observed we balance chemical equations. Balancing chemical equation: Balancing chemical equations is a try and error method that ensures the number of atoms in the side of the reactants is equal to the number of atoms in the side of products. Balancing chemical equations may also require inclusion of state symbols which shows the state of each compound or element involved in the chemical reactions. For example; the equation;
is balanced as the number of titanium and oxygen atoms are equal on both sides of the equation.
Keywords: Chemical equations, balancing of chemical equationsLearn more about: Chemical equations: Balancing of chemical equations: Law of conservation of mass:
Level: high school
Topic: Chemical equations
Sub-topic: Balancing chemical equations
IS THE EQUATION REPLACE = WITH AN ARROW.
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