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Cd (s) + 2H + (aq) Cd 2+ (aq) + H 2 (g)
State the effect on the E cell when the following changes are made.
a) The pressure of gas increased in the cathode compartment.
b) Sodium hydroxide is added at cathode compartment.
c) Decreasing the concentration of Cd 2+ .
d) Increasing the diameter of electrodes.
The atomic number of boron is 5. Boron exists as two isotopes boron-10 and boron-11. Use this information to explain why
A 38.63-mg sample of potassium ozonide, KO3, was heated to 70 °C for 1 h, undergoing a weight loss of 7.10 mg. Write a balanced chemical reaction describing this decomposition reaction. A 29.6-mg sample of impure KO3 experiences a 4.86-mg weight loss when treated under similar condition. What is the %w/w KO3 in the sample?
Find the free energy change at 25 oC for the cell reaction for the following electrochemical cell where Eocell = + 0.281 volts :
Cu | Cu+(1 M) || Ag+(1 M) | Ag
What is the term given to the opposite of catalyst?
List and explain efdects of chemical reactions
in a laboratory,1.55g of organic compound containing C, H, and O is combusted for analysis combustion resulted in 1.45g of carbon II oxide and 0.890g of steam. what is the empirical formular of the organic compound
Determine the number of atoms in 1.75 mol of Al.
Methylhydrazine (N2H3CH3) is a common liquid propellant used in rocket fuels. Look for the standard molar enthalpies of formation of the reactants and products. Calculate the ∆Ho for the reaction.
(4)N2H3CH3 (l) + (5)N2O4 (l) ---> (12)H2O (g) + (9)N2 (g) + (4)CO2 (g)
What is the average kinetic energy (in kJ mol-1) of a hypothetical gas with molecular weight 12.8 g mol-1 at a temperature of 24.7 °C? Do not try to identify the gas.
