Which acid and base neutralize to give potassium chloride salt? hf(aq) and kcl(aq) hcl(aq) and kcl(aq) hf(aq) and koh(aq) none of the above hcl(aq) and koh(aq)?

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HCl (aq) and KOH (aq)

Explanation: -

Neutralization reaction is a type of reaction in which an acid and base react together to give salt and water.

A neutralization reaction is a type of double displacement reaction as well.

So if KCl is the salt that is formed then K should come from one and Cl from another.

Hence KOH and HCl are the acid and base that would neutralize to give KCl.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.