Match the number to correct selection. What is the chemical equation for a battery containing nickel...
1.12. Consider a nickel-zinc battery operating at a current density of 4500 A m2. The space between the electrodes is filled with an alkaline electrolyte. If the conductivity of the electrolyte is 60 S m and the distance between the two electrodes is 2 mm, what is the potential drop across the cell due to ohmic losses?
(4 points) A simple battery is constructed using zinc and copper as electrodes. The chemical equation that corresponds to this process is given below: Zn + Cu? → Zn + Cu State which element is reduced and which element is oxidized. State which metal is the anode and which metal is the cathode. Reduced: CU Anode: 'In Oxidized: In Cathode: cu (2 points)
The following data were measured using a nickel electrode as the standard: Cu2+(aq) + 2e- ⟶ Cu(s) Ni2+(aq) + 2e- ⟶ Ni(s) Fe2+(aq) + 2e- ⟶ Fe(s) Al3+(aq) + 3e- ⟶ Al(s) The copper and aluminum electrodes are connected in a battery. A) Which is the anode? Cathode? Why? B) Which is oxidized? Reduced? Why? C) What will the battery voltage be? Eo =0.62V Eo =0.00V Eo =-0.15V Eo =-1.38V D) Write a balanced net ionic equation for the reaction...
QUESTION 7 What is the correct full, balanced chemical equation for the reaction between hydrochloric acid (HCI) and calcium metal (Ca)? 2 Ca(s) + HCl(aq) + Ca2Cl(aq) + H2(g) Ca(s) + 2HCl(aq) — CaCl2(aq) + H2(g) Ca(s) + HCl(aq) +CaCl(aq) + H2(g) Ca(s) + 2HCl(aq) H2(g) + CO2(g) Ca(s) + 2HCl(aq) + CaCl(aq) + H2O(1) -
QUESTION 7 What is the correct full, balanced chemical equation for the reaction between hydrobromic acid (HBr) and lithium carbonate (Li2CO3)2 LI2CO3(s) + HBr(aq) + Liz Br(aq) + H2O(l) + CO2(g) OLI2CO3(s) + 2 HBr(aq) + 2 Li Br(aq) + H2O(l) + CO2(g) Li(aq) + Br(aq) LiBr(aq) OLI2CO3(s) + 2 HBr(aq) → H2O(l) + CO2(g) OLI2CO3(s) + 2 HBr(aq) + 2LiBr(aq) + H2O(1)
QUESTION 7 What is the correct full, balanced chemical equation for the reaction between hydrobromlc acid (HBO) and lithium carbonate (LI2CO3)? LI2CO3(s) + HBr(aq) → LizBr(aq) + H2O(l) + CO2(g) LI>CO3(s) + 2HBr(aq) → H20(1) + CO2(g) LI2CO3(s) + + 2 H Br(aq) 2L1 Br(aq) + H2O(1) Li(aq) + Br(aq) → LiBr(aq) О + LI2CO3(s) + 2HBr(aq) → 2 Li Br(aq) + H2O(l) + CO2(g)
Choose the correct coefficients for balancing the given chemical equation. ...(NH4)2CO3 (aq) + ..AI(NO3)3 (aq) → ... NH4NO3 (aq) + ...Al2(CO3)3 (s) Select one: A. 1, 6, 3, 2 B. 3, 2, 6, 1 C. 3, 2, 6, 2 D. 1, 6, 2, 3 The oxidation number of Cr in Cr2O72- is... Select one: A. +3 B. -6 C.-3 D. +6
QUESTION 7 What is the correct full, balanced chemical equation for the reaction between hydrobromic acid (HBr) and sodium (Na)? 2 Na(s) + 2 HBr(aq) — 2 Na Br(aq) + H2(g) Na(s) + HBr(aq) Na Br(aq) + H2(g) Na(aq) + Br(aq) Na Br(aq) 2 Na(s) + 2 HBr(aq) — 2 Na Br(aq) + H200 2 Na(s) + 2 HBr(aq) + H2O + Coz(a)
1. when the chemical equation Fe2O3(s)+C(s) (arrow) Fe(s) +CO(g) is balanced, the coefficients in order will be: 2. In a chemical reaction, the symbol "(s)" may be read as: a)solution b) solid c) soluble d) state 3. A reactant in the chemical reaction Cl2 (g) + 2NABr (aq) arrow 2NACl(aq) + Br2(aq) is: a) chlorine b) sodium chloride c) bromine d) none of the above 4. The reaction Al2O3(s) +6HCl(aq) arrow 2AlCl3(aq) +3H2O(I) is a balanced equation. 5. What is...
The following half-reactions occur during use of the rechargeable nickel-cadmium battery: Ca(OH)2(s) + 2e → Cd(s) + 20H(aq) NiO(OH)(s) + H20(1) + e- → Ni(OH)2(s) + OH(aq) This battery has a potential of 1.35 V under standard conditions, with nickel as the cathode. What potential does this battery produce if its hydroxide ion concentration is 1.97 x 10-2 M? E = V the tolerance is +/-2%