To prepare for your laboratory, please read the lab in full and answer the follo
ID: 955477 • Letter: T
Question
To prepare for your laboratory, please read the lab in full and answer the following questions: Define the following (if necessary, see the glossary of your book): oxidation reduction redox (oxidation reduction) reaction exchange (metathesis) reaction Precipitation reaction displacement (single-replacement) reaction decomposition reaction Classify the following (unbalanced) reactions as one of the types of reactions above: Cu(s)+HNO_1(aq) right arrow Ca(NO_1)_2(aq)+H_2O(l) Cu(NO_3)_2(aq) right arrow Cu(OH)_2(s)+NaNO_2(aq) Cu(OH)_2(s)+heat right arrow CuO(s)+H_2O(i) CuO(s)+H_2SO_4(aq) right arrow CuSO_4(aq)+H_2O(I)Explanation / Answer
(1)
a. OXIDATION : - The process that involves the loss of electrons is called as oxidation.
b. REDUCTION : - The process that involves the gain of electrons is called as reduction.
c. REDOX REACTION: - The reaction that involves both oxidation and reduction simultaneously is called as redox reaction.
d. EXCHANGE REACTION : - The reaction that involves the exchange of cation (usuallu a metal) from one species to other species is called as exchnage reaction.
e. PRECIPITATION REACTION : - The reaction that involves the formation of precipitate (insoluble mass) is called as precipitation reaction.
f. DISPLACEMENT REACTION : - The reaction that involves the replacement of one species by the other species called as displacement reaction.
g. DECOMPOSITION REACTION ; - The reaction that involves the splitting of one substance into two (or) more other substnaces is called as decomposition reaction.
(2)
(1) REDOX REACTION (Cu changes it o.s from 0 to +2 hence oxidation and N changes its o.s from +5 to +4 hence reduction)
(2) EXCHANGE REACTION (METAL CHANGE IS OCCURED) (anions exchange their cation metals)
(3) DECOMPOSITION REACTION ( cupric hydroxide is decomposed to cupric oxide and water)
(4) DISPLACEMENT REACTION (anion oxide is displaced by other anion sulphate)
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