Answer:
Answer
Correct option is
A
9
pK
b
=−logK
b
=−log10
−5
=5
A mixture of ammonium hydroxide and ammonium chloride forms basic buffer solution.
The Hendrson's equation for he basic buffer solution is as given below.
pOH=pK
b
+log
[acid]
[salt]
Substitute values in the above expression.
pOH=5+log
0.1
0.1
=5
Hence, the pH of the solution is pH=14−pOH=14−5=9
Explanation:
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Answer:
This is an acid-base reaction (neutralization): H 2SO 4 is an acid, Ca(OH) 2 is a base.
...
1 H2SO4 + Ca(OH)2 → H2O + CaSO4
2 H2SO4 + Ca(OH)2 → CaSO4 + HOH
3 H2SO4 + Ca(OH)2 → H2O + CaOH2SO4
4 H2SO4 + Ca(OH)2 → H2O + Ca(HSO4)2
5 H2SO4 + Ca(OH)2 → H2O + (CaOH)2SO4
Explanation:
Answer:
La palabra bicarbonato es un término químico para referirse a una sal ácida del ácido carbónico en combinación con un metal. ... Pero si sólo está sustituido un átomo de hidrógeno por el metal, entonces obtenemos un bicarbonato o carbonato ácido, por ejemplo, bicarbonato sódico: CO3H Na.
Answer:
Explanation:
The formula for calculating the enthalpy change of a reaction by using the enthalpies of formation of reactants and products is
2C₄H₁₀ g) + 13O₂(g) ⇌ 8CO₂(g) + 10H₂O(g)
ΔH°f/kJ·mol⁻¹: -125.7 0 -393.5 -241.82