Question

Complete equation, check for balancing, use lowest set of whole number coefficients.

4. Complete the Post Lab activity below by balancing the following equations and identifying the reaction type. POST Type of Reaction LAB Complete Equation (check for balancing-use lowest set of whole number coefficients) Hz (g) + Br2 (1) ► HBr (g) a b AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3(aq) с Zn (s) + CuCl2 (aq) → Cu (s) + ZnCl2 (aq) d AlBr3 (s) + Al(s) + Br2 (1) e CsH8 (8) + O2 (g) → CO2 + H20 (g)

Answer 1

Answer.(a) Balanced reaction

H₂ + Br₂$\rightarrow$ 2HBr

in this reaction 1 mole of H₂ reacts with 1mole of Br₂ to form 2 mole of HBr.

Type of reaction: This reaction is combination reaction. In this reaction two or more than two compounds combine to form one compound.

Answer (b) Balanced reaction

AgNO₃ +NaCl $\rightarrow$ AgCl(ppt.) + NaNO₃

Explanation- A chemical reaction that invoves the formation of an isoluble product (precipitate) is called precipitation reaction. When 1 mole of AgNO_3(aq.) reacts with 1 mole of NaCl_(aq.), 1mole of precipitate of AgCl and 1 mole of NaNO_3(aq.) is obtained

Type of reaction:-Formation of AgCl is a Precipitation reaction.

Answer (c). Balanced reaction.

Zn + CuCl₂$\rightarrow$ ZnCl₂ + Cu

When Zn is added to CuCl₂ solution, Zn replace Cu from CuCl₂ to form ZnCl₂

Explanation. A chemical reaction in which more reactive element displace a less reactive from its aqueous solution is known as Displacement reaction.

Type of reaction. This is displacement reaction because Zn is more reactive than Cu and  displace the Cu from CuCl₂ solution. This reaction is also known as redox reaction.

Answer (d). Balanced reaction.

2AlBr₃$\rightarrow$ 2Al + 3Br₂

Explanation: A rection in which a single compound breaks into two or more simpler compounds is known as a decomposition reaction.

Type of reaction. This is decomposition reaction because AlBr₃ on heating decompose into Al_(solid) and Br_2(liquid)

Answer (e).Balanced reaction.

(1.First balance the carbon and hydrogen atom both side. 2 Then balance the oxygen atom both side.)

C₅H₈ + 7O₂$\rightarrow$ 5CO₂ + 4H₂O

Explanation: A reaction in which oxygen combine with a compound to form corban di oxide and water is known as combustion reaction.

Type of reaction.

This reaction is Combustion reaction. In this reaction alkyne combine with oxygen to form corban di oxide and water.