Yes because make the chalk into a powder increases its surface area so it is more likely to react, so rate of reaction is increased
This is a chemical change (chemical reaction).
Increased surface area for reaction to occur on
There is a vigorous and exothermic reaction. The hydrochloric acid and zinc react to produce zinc chloride and hydrogen gas. Large amounts of heat are also released.
zinc powder and 3.0 M HCl(aq)
There is far more total surface area available for the reaction to occur on than just the ribbon.
The reaction proceeds in two steps - the formation of calcium chloride and water and the release of chlorine gas. The white salt is hygroscopic and dissolves spontaneously releasing heat.
Nothing, they don't react with each other
Increased surface area for reaction to occur on
NaHCO3 + HCl = CO2 + H2O + NaCl
Grinding the solid into a powder increases the surface area and increases the rate of the reaction. Heating it would also increase the rate.
There is a vigorous and exothermic reaction. The hydrochloric acid and zinc react to produce zinc chloride and hydrogen gas. Large amounts of heat are also released.
increase temperature use a catalyst increase concentration increase surface area of what you are reacting (crushing into a powder)
zinc powder and 3.0 M HCl(aq)
There is far more total surface area available for the reaction to occur on than just the ribbon.
The reaction proceeds in two steps - the formation of calcium chloride and water and the release of chlorine gas. The white salt is hygroscopic and dissolves spontaneously releasing heat.
There are three ways to increase the rate of a chemical reaction. One way is to increase the temperature of the reaction, which increases the rate of molecular collision. Another option is to add a catalyst to the reaction which chemically enables the rate of reaction. Lastly, increase the pressure in the reaction area, which increases the rate of molecular collisions.
There are several ways that the rate of reaction may be increased. Some of the more common ways areincrease temperatureincrease surface area (grind or powder the reactants)use a catalystagitate/stir the reaction mixture
If you mean hydrochloric acid the answeer ist yes, hydrochloric acid is used to percipictate cocaine of solution