Question

A group of students investigated the reaction between marble chips ( calcium carbonate ) and dilute hydrochloric acid.
The equation for the reaction is:
They wanted to find the effect of changing the concentration of hydrochloric acid on the rate of the reaction. They all measured the time to collect 100 cm3 of Carbon dioxide gas and calculated the rate of each reaction.
The students used this apparatus: A group of students investigated the reaction between marble chips ( calcium carbonate ) and dilute hydrochloric acid.
The equation for the reaction is:
They wanted to find the effect of changing the concentration of hydrochloric acid on the rate of the reaction. They all measured the time to collect 100 cm3 of Carbon dioxide gas and calculated the rate of each reaction.
The students used this apparatus:

Scientific method pls question in image

Answer 1

Answer:

Well, at a guess …

(i) Temperature….

(ii) Molar concentration of the acid….

(iii) Particle size of the magnesium metal….

Given that the reaction occurs in heterogeneous phase, the particle size of the magnesium is likely to dominate…

We consider the oxidation reaction (with respect to the metal) of …

Mg(s)+2HCl(aq)⟶MgCl2(aq)+H2(g)↑