When a non metal gains or share by two electrons then the valency will be 2^- or 2^+
Answer is: CaCl₂(s), calcium chloride.
Calcium cations and chlorine anions have a crystal structure in this solid inorganic salt. Ions have <span>the ordered arrangement.</span><span>
Ethane (C</span>₂H₆) is gas, g is chemistry
abbreviations or physical state symbol for gas, gases do not have a crystal structure.
Methanol (CH₃OH) is liquid, l is chemistry abbreviations or physical state symbol for liquids, it do not have a crystal structure.
Calcium iodide is dissolved in water, aqueous solution
(aq) do not have a crystal structure.
A word equation is a chemical reaction described using words.
A common example is the act of photosynthesis - the process plants use to make glucose (sugar) to use as 'food'.
Plants convert water and carbon dioxide into oxygen and glucose.
A word equation to express this is:
Water + Carbon Dioxide → Glucose + Oxygen
The other type of equation is a symbol equation - this uses the symbols of the elements instead of the common names:
H₂O + CO₂ → C₆H₁₂O₆ + O₂
There is also a balanced version:
6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂
<em>If you want information on the balanced symbol equations, feel free to PM me.</em>
N2 H2 ——> NH3
Add a 3 in front of H2 and a 2 in front of NH3
So the answer would be
N2 3H2 ——> 2NH3
Answer:
here
Explanation:
Ka=Cx^2/1-x
Ka =1.8 x 10^-5
C = 0.1
If we consider x is negligible ie., x~0
Then x=(Ka/c)^0.5
={1.8 x 10^-5/0.1)^0.5 =0.01342
So concetration of H+ ion =Cx
=0.1 x 0.01342 =0.001342
pH=- log(0.001342) =2.87
However it is only an approximate method. Without using approximation, if we solve equation
Ka =Cx^2/1-x , for value of 'x', where C=0.1 then
We get x = 0.01273
So concetration of H+ ion = Cx
=0.1 x 0.01273 =0.001273
pH = - log (0.001273)
= 2.89.
