When zinc, iron and lead are reacted with hydrochloric acid the variable most easily measured in order to determine the effect of the chemical nature of the reactants on reaction rate is
a)temperature
b)colour
c)surface area
d)volume of gas
e)concentration
Think it's d. Am i right?
To determine the effect of the chemical nature of the reactants on the reaction rate of zinc, iron, and lead with hydrochloric acid, we need to consider which variable is most easily measured.
a) Temperature: Although temperature can affect the reaction rate, it may require specialized equipment to measure accurately. Additionally, this variable is not directly related to the chemical nature of the reactants.
b) Colour: The color change can provide some information about the reaction, but it might not be the most straightforward or accurate measurement. It does not necessarily correlate directly with the reaction rate.
c) Surface area: The surface area of the reactant can influence the reaction rate, but it might be difficult to measure in this particular case. It is also not directly related to the chemical nature of the reactants.
d) Volume of gas: When metals react with hydrochloric acid, one of the products is often hydrogen gas. Since gas volume can be easily measured using a gas syringe or gas burette, it is a suitable variable to determine the effect of the chemical nature of the reactants. By measuring the volume of gas produced within a given time, we can ascertain the reaction rates and compare them for different metals.
e) Concentration: Concentration can affect the reaction rate, but it might be more challenging to measure compared to the volume of gas. It also might not directly reflect the effect of the chemical nature of the reactants.
Considering these options, you are correct. The variable most easily measured to determine the effect of the chemical nature of the reactants on reaction rate is the volume of gas (option d).