Question

35. State reason for the following statements.
(a) Why does an aqueous solution of an acid or a base conduct electrici
(b) Dry hydrogen chloride gas does not turn blue litmus red.
(c) For dilution of acid, acid is added into water not water into acid
(d) Which has higher pH value, a concentrated or dilute solution of acid
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Answer 1

Answer:

a)aqua solution of an acid or a base conduct electricity this is only because they contain at positive and negative ions which helps in the conduction of electricity.

b)dry HCL gas does not turn blue litmus red this is because dry hydrogen chlorine gas does not contains a h3O positive ions this is because h3o positive ions does not exist alone they ओली एक्टिवेट बाय कंबाइनिंग विद वॉटर

Explanation:

.

H2+O2=H3O+ ions

c)for dilution of acid acid is added into water not water into acid the slowly because when acid is added to water the concentration of water is more than acid so it does not leads to produce excessive heat but if water is added to the concentration of acid for dilution द कंसंट्रेशन ऑफ एसिड इज मोर देन वाटर एंड इट्स टू the excessive heat and may cause burst of container.

d)the pH value of concentrated acid solution is more than dilution because during dilution water is added to acid which decreases its concentration and PH value....

thanks ....

Answer 2

Answer:

1. due to the presence of free ions aqueous solution of an acid or a base conduct electricity
2. because hydrogen chloride has doesn't have water molecules so it doesn't act like an acid... so it doesn't torn blue litmus to red
3. water is not added to acid as it is an exothermic reaction and the heat produced during this process is much more so there will be spilling of the acid and breaking of the breaker which would be fatal for Human bring
4. diluted solution