Question

2. Write the balanced chemical equation including states of matter, complete ionic reaction and net ionic reaction for the reaction between barium nitrate, Ba(NO3)2, and sodium chromate, Na2CrO4.
a. Balanced Chemical Equation
b. Complete Ionic Reaction
c. Spectator Ions
d. Net Ionic Reaction
3. Write a complete ionic reaction and a net ionic reaction for the following balanced chemical equation.
NaOH (aq) + C6H5COOH (aq)  H2O (l) + C6H5COONa (aq)       
4. Consult an internet resource for photographs of copper(I) oxide and of copper(II) oxide. Can one visually distinguish between these two compounds? Explain.   
Chemical Reactions and Equations p.14
5. Answer the following questions about the reaction:
S2-   +   NO3-    SO42-   +   NO  
a. Element oxidized    ___________
b. Element reduced    ___________
c. Reducing reactant    ___________
d. Oxidizing reactant    ___________

Answer 1

Q.No-02

(a) Balanced molecular reaction between Ba(NO3)2(aq) and Na2CrO4(aq) are given below
Ba(NO3)2(aq) + Na2CrO4(aq) → BaCrO4(s) + 2 NaNO3(aq)
(b) All ions below are (aq):
Complete ionic reaction are
Ba²⁺ + 2 NO3^- + 2 Na⁺ + CrO4^2- → BaCrO4(s) + 2 Na⁺ + 2 NO3^-

(d) Net ionic reaction are
Ba²⁺ + CrO4^2-→ BaCrO4(s)

(c) The spectator ions are Na⁺ and NO3^-

Q.No-03

Complete ionic reaction based on the given reaction are under below
Na⁺ + OH^- + H⁺ + C6H5COO^- → H2O + C6H5COO^- + Na⁺

Net ionic reaction based on the above ionic reaction
OH^- + H⁺ → H2O

Q.No-05

From question, given reaction

S^2-   +   N³⁺O^3- (S⁺⁶O4)^2-   +   N²⁺O   

We know oxidized means reducing agent and reduced means oxidizing agent

In the above reaction, Oxidation state of S increases from -2 to +6. so this is oxidized and reducing reactant

In the above reaction , oxidation state of N decreases from 3+ to 2+ so this is reduced and oxidizing reactant

We know oxidized means reducing agent and reduced means oxidizing agent