Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. hcl(aq), as described by the chemical equationmno2(s) + 4hcl(aq) --> mncl2(aq) + 2h2o(l) + cl2(g)how much mno2(s) should be added to excess hcl (aq) to obtain 235 ml of cl2(g) at 25 degrees c and 805 torr?

0.88 g

Explanation:

Using ideal gas equation to calculate the moles of chlorine gas produced as:-

where,

P = pressure of the gas = 805 Torr

V = Volume of the gas = 235 mL = 0.235 L

T = Temperature of the gas =

R = Gas constant =

n = number of moles of chlorine gas = ?

Putting values in above equation, we get:

According to the reaction:-

1 mole of chlorine gas is produced when 1 mole of manganese dioxide undergoes reaction.

So,

0.01017 mole of chlorine gas is produced when 0.01017 mole of manganese dioxide undergoes reaction.

Moles of = 0.01017 moles

Molar mass of = 86.93685 g/mol

So,

Applying values, we get that:-

0.88 g of should be added to excess HCl (aq) to obtain 235 mL of at 25 degrees C and 805 Torr.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.