Determine the identity of an unknown white powder based on the following information: Flame Test: No color Addition of Silver Nitrate: White precipitate Addition of Acid: No bubbles Addition of Barium Nitrate: No precipitate Addition of NaOH: White precipitate Addition of NaOH and testing with red litmus paper: Litmus paper remains red Group of answer choices LiNO3 Li2CO3 K2CO3 KCl NH4NO3 K2SO4 (NH4)2SO4 LiCl Li2SO4 MgCO3 MgSO4 NH4Cl Mg(NO3)2 (NH4)2CO3 MgCl2 KNO3
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
Determine the identity of an unknown white powder based on the following information:
Flame Test: No color
Addition of Silver Nitrate: White precipitate
Addition of Acid: No bubbles
Addition of Barium Nitrate: No precipitate
Addition of NaOH: White precipitate
Addition of NaOH and testing with red litmus paper: Litmus paper remains red
LiNO3
Li2CO3
K2CO3
KCl
NH4NO3
K2SO4
(NH4)2SO4
Li2SO4
MgCO3
MgSO4
NH4Cl
Mg(NO3)2
(NH4)2CO3
MgCl2
KNO3
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