1. This one is simple, just put 10^-pOH. This gives you OH- concentration
Example: pOH=5, the OH- conc. = 10^-5 which equals 1x10^-5 mol/L
2. You can't use pH to find OH concentration, so you need to find the pOH using pH. To find pOH if you have pH, the equation is pH + pOH = 14.00. Manipulate it to find pOH, so you get pOH = 14.00 - pH. Then do the same steps as above.
3. First you need to find the pH, so just enter -log(H3O+ conc.) into your calculator. This gives you pH, then just do all of the steps above.
Answer:
Balanced chemical equation:
Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃
Explanation:
When potassium iodide react with lead(II) nitrate, lead iodide is produced and solution of potassium nitrate also formed. The lead iodide is produced in the form yellow precipitate.
Chemical equation:
Pb(NO₃)₂ + KI → PbI₂ + KNO₃
Balanced equation:
Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃
The equation is balanced because there are one lead atom, two nitrate, two potassium and two iodide atoms are on both side of equation.
Word equation:
Lead nitrate + potassium iodide → lead iodide + potassium nitrate
The given chemical equation is:
On balancing the equation we get,
Calculating enthalpy of formation of this reaction from the standard heats of formation of the products and reactants:
Δ
=[(-1669.8kJ/mol)+ {3* (-909.27 kJ/mol)}]-[(-3442kJ/mol)+{3*(-285.8 kJ/mol)}]
=[(-4397.61kJ/mol)]-[(-4299.4kJ/mol)]
=-98.21kJ/mol
Total enthalpy change when 15 mol of reacts will be=
Answer:
Yeah force
Yeah Energy
Yeah Watts
Yeah Joules
Explanation:
1. (Force * distance) /time = Power
2. Energy/time = Power
3. Cause Watts = Power
4. Joules is just the unit of energy
Answer:
8 electrons
Explanation:
Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.
The electronic configuration of the element phosphorus is:-
Thus, from the electronic configuration shown above,
In n = 2, the total number of electrons are 8 which are present in