Chemistry C3 possible questions Flashcards | Quizlet
Explain why hydrochloric acid reacts faster than ethanoic acid. [2 marks] because hydrochloric acid is a strong(er) acid (calcium or magnesium) ions causing water hardness are dissolved from rocks Ethanol is an alcohol. One use of ethanol is in alcoholic
Magnesium - Wikipedia
Magnesium reacts with water at room temperature, though it reacts much more slowly than calcium, a similar group 2 metal. When submerged in water, hydrogen bubbles form slowly on the surface of the metal – though, if powdered, it reacts much more rapidly.
The effect of surface area on rates of reaction - A-Level …
A small heap of fine magnesium powder tends to burn rather more slowly than a strip of magnesium ribbon, for example. Some examples Calcium carbonate and hydrochloric acid In the lab, powdered calcium carbonate reacts much faster with dilute hydrochloric
How Can You Tell Magnesium Is More Reactive Than …
Take two beaker containing HCL in it.Put magnesium in one beaker and zinc in another beaker.Respective chlorides will be formed.But magnesium reacts faster than zinc hence it is more reactive Thank Writer
Why Are Some Metals More Reactive Than Others?
25/3/2020· Why Are Some Metals More Reactive Than Others? By Staff Writer Last Updated Mar 25, 2020 3:07:47 AM ET A metal atom''s aptitude to lose electrons to other atoms causes it to be more reactive. Involved in the scientifically determined aptitude is the speed
PRODUCTS THAT ARE FORMED BY HEATING AT VARIOUS …
Abstract Thorium phosphate reacts with calcium phosphate at a temperature higher than 500 deg C to form thorium oxide and calcium pyrophosphate. The formation of the metaphosphate is also possible. This reaction explains why all the attempts to synthesize
home experiment - Citric acid chelates calcium carbonate …
I performed an experiment using egg shells (calcium carbonate) to represent teeth and reacted the calcium carbonate with acids. When measuring the rate of reaction citric acid had a higher rate of Acetic acid has a $\mathrm{p}K_\mathrm{a}$ value of $4.76
Temperature and Rate of a Chemical Reaction | Chapter 6: …
Yes. The warm solutions react much faster than the cold solutions. Explain Show students that the faster moving molecules in the warm reactants hit each other with more energy and so are more likely to react. Ask students: On the molecular level, why do you
FAQ - UNICALCE
Which is better, calcium lime or magnesium lime? A Both are good, it depends on the use. Calcium lime has a faster correction effect than magnesium lime. Magnesium lime supplements an amount of magnesium that is important for photosynthesis functions.
Why does the temperature of Hydrochloric Acid Increase …
16/9/2015· Magnesium Ribbon + Hydrochloric Acid → Magnesium Chloride + Hydrogen Mg + 2HCl → MgCl² + H ² Hypothesis I think that as the temperature of the hydrochloric acid increases so will the rates of reaction. I think this because of the Collision theory
Reactions of the Group 2 elements with acids
16/8/2020· This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with common acids. Reactions with dilute hydrochloric acid All the metals react with dilute hydrochloric acid to give bubbles of hydrogen and a colourless solution of the metal chloride.
Why is hydrochloric acid stronger than ethanoic acid? : …
I''m not sure electronegativity is the best argument in this case. Oxygen isn''t really less electronegative than chlorine, in fact on certain scales, such as the Pauling it''s more so. Also, fluorine is more electronegative than chlorine, but HF is not even a strong acid. In
2 seen (2)
1 Magnesium and calcium are in group 2 of the periodic table. They are less reactive than the metals in group 1. (a) Calcium reacts with water to form calcium hydroxide, Ca(OH) 2, and hydrogen, H 2. Ca(s) + 2H 2 O(l) → Ca(OH) 2 (s) + H 2 (g) Describe what would
Practical - Rate of reaction - Eduqas - GCSE Chemistry …
Magnesium reacts with dilute hydrochloric acid to produce hydrogen: magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg(s) + 2HCl (aq) → MgCl 2 (aq) + H 2 (g) The volume of
Calcium Chloride vs. Magnesium Chloride – Peters …
FACT: Calcium Chloride penetrates ice faster than magnesium chloride. The Midwest Research Institute study also evaluated ice penetration. This factor is critical because ice melters must punch through ice and packed snow to break their bond with the pavement so plows can remove them.
12.2 Factors Affecting Reaction Rates – Chemistry
Yet calcium reacts at a moderate rate, whereas sodium reacts so rapidly that the reaction is almost explosive. The State of Subdivision of the Reactants Except for substances in the gaseous state or in solution, reactions occur at the boundary, or interface, between two phases.
Calcium, inositol triphosphate and diacylglycerol | …
Plus, where calcium and magnesium are both suitable actors (eg. some sort of promiscuous ion-binding site) the calcium usually reacts about 100 times faster than magnesium, making it a more effective messenger (Verkhratski et al, 2014)
5. Read the following passage carefully and answer the …
Magnesium ribbon reacts with both hydrochloric acid and acetic acid but reaction is faster in hydrochloric acid than in acetic acid. Do you know why? liydrochloric acid is more reactive than acetic acid. It shows that the nature of the reactant influences the rate of
EDTA Titrations 2: Analysis of Calcium in a Supplement Tablet; Analysis of Magnesium …
solution. Calcium and magnesium are examples. To ensure consistent results of titrations, the pH of the solutions must be controlled by using buffer solutions. The minimum pH required for successful titration of calcium ions with EDTA is about 8, and that for 10
equilibrium - Reaction of citric acid and calcium chloride …
Calcium carbonate or calcium phosphate are even more insoluble, yet even they will not precipitate in similar conditions (i.e., in acidic media). That''s the problem with the salts of weak acids. (Yes, we may consider phosphoric acid weak, if we are talking of its third proton.)
9 f patterns of reactivity - LinkedIn SlideShare
Some metals react faster than others and some may react very slowly or not at all. metal oxygen observation This photograph shows what happens when magnesium reacts with copper sulfate. Why does the blue colour of the coppers sulfate solution gradually
Limestone, pH and calcium - Progressive Forage
Calcium magnesium carbonate (dolomite) is often used for . Dolomite supplies magnesium, a consideration if you are trying to increase magnesium content, but should be otherwise avoided. While dolomitic lime tends to get a higher CCE score, dolomite is less soluble than calcium carbonate and reacts more slowly, resulting in a lower soil pH change.
Reactions of Group 2 Elements with Water - Chemistry …
Calcium, for example, reacts fairly vigorously and exothermically with cold water. Bubbles of hydrogen gas are given off, and a white precipitate (of calcium hydroxide) is formed, together with an alkaline solution (also of calcium hydroxide, which is slightly water-soluble).
Calcium chloride - Wikipedia
Calcium chloride is an inorganic compound, a salt with the chemical formula CaCl 2.It is a white coloured crystalline solid at room temperature, and it is highly soluble in water. Melting point 772–775 C (1,422–1,427 F; 1,045–1,048 K) anhydrous 260 C (500 F
Which reacts faster in hydrochloric acidsodium …
28/11/2014· Calcium carbonate has only a low solubility in water so reaction can only occur at the solid/liquid interface and the rate will depend on how finely the carbonate is ground but in any case it will be quite slow. Sodium carbonate is freely soluble in water and so will
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