Explanation:
I don't know sorry ok I have some work so I m sorry
Answer:
Silver
Explanation:
What mass of copper was discharge at the cathode in a cell
Answer:
H2SO4 + 2NaOH → Na2SO4 + 2H2O
Explanation:
This question is describing the neutralization reaction between dilute sulfuric acid (H2SO4) and sodium hydroxide (NaOH). These two compounds combine to form sodium salt and water as products (see the chemical equation below).
H2SO4 + NaOH → Na2SO4 + H2O
However, this equation is not BALANCED because the number of atoms of each element are not the same on both sides of the equation. To balance the equation, COEFFICIENTS are used as follows:
H2SO4 + 2NaOH → Na2SO4 + 2H2O
From this equation, the atoms of hydrogen (H), sulphur (S), oxygen (O), sodium (Na) are now equal on both sides, hence, it is said to be BALANCED.
Answer:
Cd(s) + AgNO₃(aq) → Cd(NO₃)₂ (aq) + Ag(s)
Oxidized: Cd
Reduced: Ag
Explanation:
Cd(s) + AgNO₃(aq) → Cd(NO₃)₂ (aq) + Ag(s)
Cd → Cd²⁺ + 2e⁻ Half reaction oxidation
1e⁻ + Ag⁺ → Ag Half reaction reduction
Ag changed oxidation number from +1 to 0
Cd changed oxidation number from 0 to +2
Let's ballance the electrons
( Cd → Cd²⁺ + 2e⁻ ) .1
( 1e⁻ + Ag⁺ → Ag ) .2
Cd + 2e⁻ + 2Ag⁺ → 2Ag + Cd²⁺ + 2e⁻
Finally the ballance equation is:
Cd(s) + 2AgNO₃(aq) → Cd(NO₃)₂ (aq) + 2Ag(s)
