Question
Define the first law of thermodynamics and also derive its mathematical form.

Answer

SELF

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

S. No.
Column I
Column II
1.
Gypsum
$NaHCO_3$
2.
Plaster of Paris
$Na_2CO_3.10H_2O$
3.
Bleaching powder
$CaSO_4.2H_2O$
4.
Washing soda
$\text{CaSO}_4\frac{1}{2}\text{H}_2\text{O}$
5.
Baking soda
$CaOCl_2$
Dihydrogen gas used in Haber’s process is produced by reacting methane from natural gas with high temperature steam. The first stage of two stage reaction involves the formation of CO and $H_2$. In second stage, CO formed in first stage is reacted with more steam in water gas shift reaction,
$\text{CO (g) + H}_2\text{O (g)}\rightleftharpoons\text{CO}_2\text{ (g) + H}_2\text{ (g)}$
If a reaction vessel at 400°C is charged with an equimolar mixture of CO and steam such that $\text{p}_\text{co}=\text{p}_{\text{H}_2\text{O}}=4.0$bar, what will be the partial pressure of $H_2$ at equilibrium?$\text{K}_\text{p}=10.1\text{ at }400^\circ\text{C}$
If the position of the electron is measured within an accuracy of $\pm0.002\text{nm},$ calculate the uncertainty in the momentum of the electron. Suppose the momentum of the electron is $\frac{\text{h}}{4\pi_{\text{m}}}\times0.05\text{nm},$ is there any problem in defining this value.
Explain the following: Why does the element silicon, not form a graphite like structure whereas carbon does.
Match the following prefixes with their multiples:
 
Prefix
Multiples
(i)
micro
$10^6$
(ii)
deca
$10^9$
(iii)
mega
$10^{-6}$
(iv)
giga
$10^{-15}$
(v)
femto
$10$
  1. Commercially available concentrated hydrochloric acid contains $45\%$ HCl by mass.
  1. What is the molarity of this solution? The density is $1.19g$ mL.
  2. What volume of cone. HCl is required to make $1.00L$ of $0.24M$ HCl?
  1. Write the balanced chemical equations for the following:
  1. $KMnO_4 + NH3 \rightarrow MnO_2 +KOH+ H_2O + N_2$
  2. $HNO_3 + P_4\rightarrow NO_2 + H_3PO_4 + H_2O$
Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens.
What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide so that when mixed in equal volumes, there is no precipitation of iron sulphide? (For iron sulphide, $K_{sp} = 6.3 \times 10^{–18}$).
Explain mechanical work and how is work expressed in different situations? Explain.
  1. What is the increasing order of the acidity of the compounds, $H_2O, H_2S$ and $H$, Se? Give reason for your answer.
  2. Complete and balance the following chemical equations:
    1. $\text{Na}+\text{D}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }$
    2. $\text{SO}_3+\text{D}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }$
    3. $\text{Na}_2\text{O}+\text{D}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ }$