1. I'm not sure. I would guess mixture
2. Mixture
3. Compound
4. Element
5. Compound
6. Mixture
Answer:
1.93
Explanation:
Moles of C
H
COOH = 38/1000 × 0.50 = 0.019mol
Moles of C
H
COONa = Mass/Molar mass = 2.64/144.10 = 0.018321mol
Final pH = pKa + log([C
H
COONa]/[C
H
COOH]
= -log Ka + log(mols of C
H
COONa]/mols of C
H
COOH
= -log(6.5 × 10^(-5)) + log (0.018321/0.019)=4.17
change in pH = final - initial pH
= 4.17 - 2.24
=1.93
Answer:
Which class r u in hmm ? Tell me okay
Answer is: 1. HClO₃; (chloric acid).
Balance chemical reaction (dissociation):
ClO₃⁻(aq) + H₂O(l) ⇄ HClO₃(aq) + OH⁻(aq).
According
to Bronsted-Lowry theory acid are donor of protons and bases
are acceptors of protons (the hydrogen cation or H⁺).
The chlorate anion (ClO₃⁻) is Bronsted base and it
can accept proton and become conjugate acid HClO₃..