Solution Found!
Complete and balance each equation. If no reaction occurs,
Chapter 4, Problem 75E(choose chapter or problem)
Complete and balance each equation. If no reaction occurs, write “NO REACTION.”
a. LiI(aq) + BaS(aq) →
b. KCl(aq) + CaS(aq) →
c. CrBr2(aq) + Na2CO3(aq) →
d. NaOH(aq) + FeCl3(aq) →
Questions & Answers
QUESTION:
Complete and balance each equation. If no reaction occurs, write “NO REACTION.”
a. LiI(aq) + BaS(aq) →
b. KCl(aq) + CaS(aq) →
c. CrBr2(aq) + Na2CO3(aq) →
d. NaOH(aq) + FeCl3(aq) →
ANSWER:Solution: Here, we are going to describe a process to prepare 250 mL of a 0.250 M sucrose solution. Also, we are going to describe a process to prepare 350.0 ml of 0.100 M sucrose solution starting with 3.00 L of 1.50 M sucrose solution. Step1: Molarity is defined as the number of moles of the solute(Here sucrose is the solute) in 1 litre of the solution. Mathematically, Number of moles of solute Molarity(M) = -------------------------------------- ------(1) Volume of solution in litres Step2: a) Given, volume of the sucrose solution = 250 mL = 250 / 1000 L = 0.250 L Molarity of the sucrose solution = 0.250 M Now, using the molarity expression, we get, Number of moles of sucrose(C H O ) = v1