The following chemical reaction takes place in aqueous solution: CuCl₂(aq)+Na₂S (aq) → CuS(s)+2 NaCl(aq) Write the net ionic equation for this reaction.

Consider the following precipitation reaction: 5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) → 5 Fe3+(aq) + Mn2+(aq) + 4 H2O(l)   An iron sample weighing 0.276 g is converted into Fe2+(aq) and requires 31.57 mL of MnO4-(aq) according to the equation above. What is the Molarity of the MnO4-(aq) solution?

The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia. The ammonia, which is a weak base, can be neutralized with hydrochloric acid, as described by the equation NH, (aq) + HCl(aq) → NH₂Cl(aq) If 46.0 mL of 0.150 M HCl(aq) is needed to neutralize all the NH, (g) from a 2.25 g sample of organic material, calculate the mass percentage of nitrogen in the sample. mass percentage:

CuO(s)+H2SO4(aq) → CuSO4(aq)+H2O(l) Write the name of the spectator ion in the reaction.

Write a balanced chemical equation for the following reaction in a basic solution.ClO–(aq) + Cr(OH)3(s) → Cl–(aq) + CrO42–(aq)  ClO–(aq) + Cr(OH)3(s) + 3 OH–(aq) → Cl–(aq) + CrO42–(aq) + 3 H2O( l) 3 ClO–(aq) + 2 Cr(OH)3(s) + 4 OH–(aq) → 3 Cl–(aq) + 2 CrO42–(aq) + 5 H2O( l) ClO–(aq) + Cr(OH)3(s) → Cl–(aq) + CrO42–(aq) + 3 H+(aq) 2 ClO–(aq) + 3 Cr(OH)3(s) + 3 OH–(aq) → 2 Cl–(aq) + 3 CrO42–(aq) + 6 H2O(l) 4 ClO–(aq) + Cr(OH)3(s) + 4 OH–(aq) → Cl–(aq) + CrO42–(aq) + 6 H2O( l)

The following chemical reaction takes place in aqueous solution: Fe(NO3)₂(aq) + (NH₁) S(aq) → FeS(s)+2 NHÃNO³(aq) Write the net ionic equation for this reaction. 0 ローロ X 2 4

The following chemical reaction takes place in aqueous solution: AgF(aq)+Nal(aq) → AgI(s)+NaF(aq) Write the net ionic equation for this reaction.

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 and KOH are mixed. OH(aq) + OH¯(aq) → H₂O(l) O H+ (aq) + OH(aq) + 2 K+ (aq) + SO4²-(aq) → H+ (aq) + OH¯(aq) + K₂SO4(s) O No reaction occurs. O 2 K+ (aq) + SO4²- (aq) → K₂SO4(s) H+ (aq) + OH Taq) + 2 K+ (aq) + SO42 (aq) → H₂O(l) + 2K+ (aq) + SO4²- (aq)

A 0.450 g sample of impure CaCO,(s) is dissolved in 50.0 mL of 0.150 M HC1(aq). The equation for the reaction is CACO, (s) + 2 HCI(aq) → CaCl, (aq) + H,O(1) + CO,(g) The excess HCl(aq) is titrated by 8.60 mL of 0.125 M NAOH(aq). Calculate the mass percentage of CaCO, (s) in the sample. mass percentage: % Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry Publisher: University Science Books O O 6 hulu 9 MacBook PrO GSearch or type URL % & 4. 6. 8. dele Y. OP H. V MOSISO command option

The following chemical reaction takes place in aqueous solution: FeSO4(aq) + (NH4) S(aq) → FeS(s)+(NH4)₂SO4(aq) 2 Write the net ionic equation for this reaction.