A student discovers a bottle of NaOH with a partially destroyed label. How can the concentration be determined without using a pH meter?

Certain anaerobic organisms such as methanogens have the ability to metabolize carbon dioxide into methane in the presence of hydrogen. Methane is produced by the oxidation of _____?

Based on the following reduction potential data, which is the strongest oxidizing agent? E°red = +1.78 V for H2O2(aq) + 2H+(aq) + 2e- → 2H2O(l) E°red = +0.800 V for Ag+(aq) + e- → Ag(s) E°red = -0.130 V for Pb2+(aq) + 2e- → Pb(s)

Based on the following reduction potential data, what is the ∆G°rxn for the following electrochemical cell reaction: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)? E°red = -0.763 V for Zn2+(aq) + 2e- → Zn(s) E°red = +0.340 V for Cu2+(aq) + 2e- → Cu(s)

When titrating a weak base with a strong acid, approximately where would the pH be observed when reaching the equivalence point?

What is the conjugate base in the following reaction: HCl (aq) + H2O (l) →Cl- (aq) + H3O+ (aq)?(Paired item 1)

Write the equilibrium expression for H2O(g) + CO(g) ⇌ H2(g) + CO2(g).

What is the conjugate base in the following reaction: HCl (aq) + H2O (l) →Cl- (aq) + H3O+ (aq)?(Paired item 1)

Based on the following reduction potential data, which is the strongest oxidizing agent? E°red = +1.78 V for H2O2(aq) + 2H+(aq) + 2e- → 2H2O(l) E°red = +0.800 V for Ag+(aq) + e- → Ag(s) E°red = -0.130 V for Pb2+(aq) + 2e- → Pb(s)

Write the equilibrium expression for 2NO(g) + 2H2(g) ⇌ N2(g) + 2H2O(g).