QUESTIONS b. What does the reaction of chalk with HCI show you about reaction rn
ID: 538391 • Letter: Q
Question
QUESTIONS b. What does the reaction of chalk with HCI show you about reaction rnaies? 2. a. Write the balanced equation for the reaction of zinc and HCL b. Write the equilibrium expression for the reaction of zinc and HC1 Keq- c. Should the equilibrium expression change if the size of the zinc picces changes? Why or why not? d·Should the reaction rate change if the size of the Zn pieces changes? Why or why no? e. When the concentration of HCl is increased, what happens to the reaction rate? Is this what you expected? Why or why not? 3. a. What effect does temperature have on the reaction rate of oxalic acid and have on the reaction rate of oxalic acid and permanganate? b. Will temperature have an effect on the equilibrium constant of this reaction?Explanation / Answer
Ans 1.
a)the balanced reaction of Chalk(CaCO3) with HCl is given as :
CaCO3 + 2HCl = CaCl2 + CO2 + H2O
b) The rate of the reaction is the speed by which reactants combine together to form products .
HCl is a strong acid , so it readily reacts with CaCO3 to give the products .
The reaction rate depends upon :
temperature of the Acid
amount and concentration of acid
amount and concentration of CaCO3
Surface area of CaCO3
presence of catalyst ( if any)