alleryHydrogen chloride dissolved in water conducts electricity because:
AHCl ionises in water to give H+ and Cl- ions
BHCl gives off heat
CWater is acidic under typical conditions
DHCl is a metal across all cases
Answer & Solution
Correct answer: A. HCl ionises in water to give H+ and Cl- ions
1. In pure liquid HCl the molecule is covalent and non-conducting.
2. When dissolved in water, HCl reacts with H2O to give H3O+ and Cl-.
3. Free ions can carry current.
4. So aqueous HCl conducts electricity by ionisation.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_
Keep practising Periodic Table & Periodic Properties
Browse all Periodic Table & Periodic Properties questions for Andhra Pradesh SSC (Class 10), or explore more Chemistry topics.
Related questions
In an electrovalent (ionic) compound MgCl2, magnesium and chlorine ions exist as:Which is the BEST example of a metallic bond?Why are giant covalent crystals (like diamond) very hard?Which property of water is due to hydrogen bonding?Which molecule features hydrogen bonding?CO2 has polar bonds yet is non-polar overall because:The shape of an ammonia (NH3) molecule is:Why is the structure of methane tetrahedral?