CrCl3 reacts with AgNO3 in aqueous solutions to produce a precipitate of AgCl that can be filtered and weighed. The balanced equation for the reaction is: CrCl3 (aq) + 3 AgNO3 (aq) → 3 AgCl (s) + Cr(NO3)3 (aq) Suppose you have a mixture that contains CrCl3, plus other compounds that do not react with AgNO3. If 0.3645 g of the mixture yields 0.8979 g of AgCl, what is the percentage of CrCl3 in the mixture? Molar masses: CrCl3 158.35 g/mol AgCl 143.32 g/mol

Balance the following reaction in acidic solution. Al(s) + Cr,03 (aq) → Al3+ (aq) + Cr3*(aq) How many electrons are transferred in the balanced reaction? Are the H+ ions on the reactants or products side? How many H+ ions are present in the balanced equation? Are the H2O molecules present on the reactants or products side? How many H20 molecules are present in the balanced equation?

A chemist wishes to precipitate iron ions out of a solution of iron (III) nitrate.  Complete balanced equation, total ionic equation and a net ionic equation have been provided. Identify a spectator ion. Complete Balanced Chemical Equation  Fe (NO3)3 (aq) + 3 NaOH (aq)  -->   Fe (OH)3 (s) + 3 NaNO3 (aq) Total Ionic Equation  Fe3+ (aq) + 3 NO3- (aq) + 3Na+ (aq) + 3 OH- (aq) -->  Fe (OH)3 (s) + 3 Na+ (aq) + 3 NO3- (aq) Net Ionic Equation  Fe3+ (aq) + 3 OH- (aq)  -->   Fe (OH)3 (s)     Identify a spectator ion:

From the chemical equation, what ions are the spectator ions? CaCl2(aq) + 2AgNO3(aq) --> Ca(NO3)2(aq) + 2AgCl(s)

6 a b U d [Tutorial: Titration stoichiometry] This question will walk you through the steps of calculating the volume of titrant required to reach the endpoint based on the volume and concentration of analyte. Consider the standardization of NaOH by titration with C,H,O, according to the following chemical reaction: 3 NaOH(aq) + C,H,O,(aq) = Na,C,H,O,(aq) + 3 H₂O(l) Step 1: Evaluate the question. How many moles of aqueous sodium hydroxide (NaOH) will react to completely neutralize one mole of aqueous citric acid (C,H,O,)? Which equation will be most helpful for solving this problem? Calculate the volume in mL of a 0.200 M NaOH solution needed to neutralize 345 mL of 0.033 MC,H,O, standard solution. Based on the fact that NaOH is a strong base and C,H,O, is a weak acid, how would you describe the pH of the solution at the endpoint, where moles of base = 3 times the moles of acid?

If 365 mL of 0.285 M MgCl₂ is added to 235 mL of 0.215 M (NH₄)₃PO₄, how many moles of Mg₃(PO₄)₂ precipitate will be formed? The balanced equation is 3 MgCl₂(aq) + 2 (NH₄)₃PO₄(aq) → Mg₃(PO₄)₂(s) + 6 NH₄Cl((aq)

Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? O yes O no HCI(aq) + NH, (aq) → NH,CI(aq) reducing agent: oxidizing agent: redox reaction? O yes no 2C1, (g) + Sn (s) SnCl, (s) reducing agent: oxidizing agent: redox reaction? O yes no C(s) + 0, (g) → Co, (g) reducing agent: oxidizing agent:

What is the theoretical yield of Ag(s) when 2.0 g Zn(s) and 25.0 mL of 0.10 M AGNO3(aq) react according to the balanced chemical equation? Zn(s) + 2 AgNO3(aq) → Zn(NO3)2(aq) + 2 Ag(s)

The amount of chloride anion in a solution can be determined via titration with AgNO3(aq), according to the following balanced chemical equation: Cl–(aq) + AgNO3(aq) → AgCl(s) + NO3–(aq) What is the molarity of NaCl in a solution if titration of 15.00 mL of the solution with 0.2488 M AgNO3 requires 19.13 mL of the AgNO3 solution to reach the endpoint.

1. For each of the following reactions, identify the category of reaction, balance reaction, and describe how you knew a reaction took place. To indicate an already balanced reaction, write balanced above the reaction. Reaction 1 Balance: H2O(1) + NO2(g) Cu(s) Cu(NO3)2(aq) + HNO3(aq) + Reaction Category: How did you identify a reaction took place? Reaction 2 Balance: Cu(NO3)2(aq) + NaOH(aq) – Cu(OH)2(s) + NaNO3(aq) Reaction Category: How did you identify a reaction took place? OhoW Reaction 3 Balance: Cu(OH)2(s) → CuO(s) + H2O(1) Reaction Category: How did you identify a reaction took place? Reaction 4 Balance: CuO(s) + H2SO4(aq) – CuSO4(aq) + H2O() Reaction Category: How did you identify a reaction took place? Reaction 5 Balance: CuSO4(aq) + Zn(s) → ZNSO4(aq) + Cu(s) Reaction Category: How did you identify a reaction took place?