Answer:
false
Explanation:
It is because the pH for Hydroxide ions is 7
Answer:
The reaction is reactant-favored
Explanation:
If we take a look at the reaction equation, Zn2+ (aq) + Co (s) Zn (s) + Co2+ (aq) and consider the reduction potential of the species involved
Zn^2+(aq)/Zn(s)= -0.76
Co^2+(aq)/Co(s)= -0.28
It can easily be seen that the reduction potential of zinc is more negative than that of cobalt. Hence the electrochemical reaction is not spontaneous as written but will greatly favour the reverse reaction.
<h2>2 Cu + 1/2 O2 --> Cu2O + Cu2O + 1/2 O2 --> 2CUO</h2><h2 /><h2 /><h2>Copper is oxidized since it went from being an oxidation number of 0 to +2. </h2><h2 /><h2 />
pH of buffer solution : 4.32
<h3>Further explanation
</h3>
A buffer solution is a solution that can maintain a good pH value due to the addition of a little acid or a little base or dilution.
The buffer solution can be acidic or basic
Acid buffer solutions consist of weak acids(H₂CO₃) and their salts.(NaHCO₃)
mol H₂CO₃
mol NaHCO₃
![\tt [H^+]=Ka\dfrac{mole~weak~acid}{mole~salt}\\\\(H^+]=1.8\times 10^{-5}\dfrac{0.008}{0.003}=4.8\times 10^{-5}\\\\pH=5-log~4.8=4.32](https://tex.z-dn.net/?f=%5Ctt%20%5BH%5E%2B%5D%3DKa%5Cdfrac%7Bmole~weak~acid%7D%7Bmole~salt%7D%5C%5C%5C%5C%28H%5E%2B%5D%3D1.8%5Ctimes%2010%5E%7B-5%7D%5Cdfrac%7B0.008%7D%7B0.003%7D%3D4.8%5Ctimes%2010%5E%7B-5%7D%5C%5C%5C%5CpH%3D5-log~4.8%3D4.32)
