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Zina [86]
3 years ago
15

Which of the following metals will liberate hydrogen from dilute HCL? A. Ag B.Au C.Hg D.Sn​

Chemistry
1 answer:
ollegr [7]3 years ago
5 0

Answer:

ag and au are sure not to react. but hg and sn might or might not

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A displacement reaction takes place when calcium is placed in a solution of zinc chloride. Which substances will most likely be
Karolina [17]

Hi!


The correct option would be A.


This is because the displacement reaction would take place as follows

Ca + ZnCl2 --> CaCl2 + Zn


A displacement reaction is one in which a substitution occurs, as the more reactive element in the mixture replaces one that is less reactive.

In the electrochemical series, we find Ca higher than Zn, which is indicative of Ca being more reactive, and having the capacity to displace Zn to form a compound.


Option D would be incorrect as no such substitution occurs.

Option B would be incorrect because again, there is no substitution occurring, and also because two metals alone (Ca and Zn in our case) can never react to form a compound.

Option C would be incorrect because it is not possible because CaCl and ZnCl are forms that are too unstable to exist due to an overall positive charge.


Hope this helps!

5 0
3 years ago
Is the following a chemical change or a physical change?
spayn [35]
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8 0
3 years ago
PLEASE HELP!! i am very stuck
MAVERICK [17]

Answer:

Explanation:

Molar mass of Ca(Cn)2 = 92. 11 mol/g

6 0
2 years ago
At the same temperature, a freshwater lake frezzes but a salt water bay does not because
Alexandra [31]

Ocean water freezes at a lower temperature than freshwater. ... Fresh water freezes at 32 degrees Fahrenheit but seawater freezes at about 28.4 degrees Fahrenheit , because of the salt in it.

3 0
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Water is called compound why?​
qaws [65]

Answer: because it consists of more than one element, which are hydrogen and oxygen in a covalent bond.

5 0
2 years ago
Read 2 more answers
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