Equal volumes of methanoic acid and sodium hydroxide are mixed, if x is the heat

⇦

⇨

Equal volumes of methanoic acid and sodium hydroxide are mixed, if x is the heat of formation of water, then heat evolved on neutralisation is

Options

(a) twice of x
(b) equal to x
(c) more than x
(d) less than x

Correct Answer:

less than x

Explanation:

“Methanoic acid(HCOOH), Sodium hydroxide(NaOH). Weak acid and strong base neutralisation. H⁺ + OH⁻ → H₂O + x(Heat of formation),
HCOOH ⇌ HCOO⁻ + H⁺, NaOH ⇌ Na⁺ + OH⁻,
H⁺ + OH⁻ ⇌ H₂O + Less than x (Heat of reaction). Because, some of the energy is lost in ionization of weak acid, HCOOH.”.

Related Questions:

1. In alkaline hydrolysis of a tertiary alkyl halides by aqueous alkali,
2. Phenolic carboxylic acids may be prepared by
3. The sum of coordination number and oxidation number of the metal M in the complex
4. The energy of an electron in the nth Bohr orbit of hydrogen atom is
5. A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated.

Topics: Thermodynamics (179)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends