Tags Chemistry

Chemistry

Get insights from 6.9k questions on Chemistry, answered by students, alumni, and experts. You may also ask and answer any question you like about Chemistry

Follow Ask Question

6.9k

Questions

Discussions

Active Users

Followers

New answer posted

6 months ago

Chemistry Class 11th

Kindly go through the questions

0 Follower 7 Views

Vishal Baghel

Contributor-Level 10

With AlCl₃, alkyl halide will form cabocation which will show rearrangement.

0 0

New answer posted

6 months ago

Chemistry Class 12th

A 0.5 percent solution of potassium choride was found to freeze at -0.24°C. The percentage dissociation of potassium chloride is__________. (Nearest integer)

(Molal depression constant for water is 1.80 K kg mol^-¹ and molar mass of KCl is 74.6 g mol^-¹)

0 Follower 3 Views

alok kumar singh

Contributor-Level 10

0.5 % KCl solution has molality (m) = $\frac{0.5 * 1000}{74.5 * 99.5}$

$K C l_{(a q)} ? K_{(a g)}^{+} + C l_{(a q)}^{-}$

1 - a a a

And I = $(1 - α + α + α) = 1 + α$

$i = \frac{Δ T f}{k f * m} = \frac{0.24 * 74.5 * 99.5}{1.8 * 0.5 * 1000} = 1 + α$

1.976 = 1 + a

$∴ α = 0.976$

% = 97.6%

the nearest 98.

0 0

New answer posted

6 months ago

Chemistry Class 11th

Which of the following carbocations is most stable?

0 Follower 17 Views

Vishal Baghel

Contributor-Level 10

In this carbocation +M effect of -OCH₃ group stabilizes the carbocation.

While in option (A) and (B), +M of -OCH₃ will not work but in option (C), +M of -OCH₃ works so due to more delocalization in option (D), it is more stable.

0 0

New answer posted

6 months ago

Chemistry Class 11th

For complete combustion of methanol

$C H_{3} O H (1) + \frac{3}{2} O_{2} (g) \to C O_{2} (g) + 2 H_{2} O (I)$

The amount of heat produced as measured by bomb calorimeter is 726 kJmol^-¹ at 27°C. The enthalpy of combustion for the reaction is -x kJ mol^-¹, where x is_________

(Nearest integer)

(Given : R = 8.3 J K^-¹ mol^-¹).

0 Follower 1 View

alok kumar singh

Contributor-Level 10

Hence, x = 727 (the nearest integer)

0 0

New answer posted

6 months ago

Chemistry Environmental chemistry

Sulphur dioxide is one of the components of polluted air. SO₂ is also a major contributor to acid rain. The correct and complete reaction to represent acid rain caused by SO₂ is

0 Follower 2 Views