Std 8 gujarati ch 3 jumo bhisti / standard 8 gujarati ch 3 swadhyay / dhoran 8 gujarati path 3

The enthalpy change of the reaction C_3H_8(g)+H_2(g) rarr C_2H_6(g)+CH_4(g) , at 25^@ , will be Given that: heat of combustion values under standard condition (The standard heat of formation of C_3H_8(g) is -103.8kJ/mol)

Find the variance and standard deviation of the random variable X whose probability distribution is given below : {:(x,0,1,2,3),(P(X=x),1/8,3/8,3/8,1/8):}

A : When isobutane-is-reacted with Cl_(2) in presence of sunlight then CH_(3)-overset(CH_(3))overset(|)CH-CH_(3)Cl is formed in high percentage. R : The reactivity of 1^(@), 2^(@) “and” 3^(@) H-atoms towards chlorine are 1 : 3.8 : 5 respectively.

P^(H) of CH_(3)COOH and CH_(3)COONa buffer is 4.8 in Which of the following conc. Conditions, the buffer capacity will be maximum [CH_(3)COOH] & [CH_(3)COONa]

Given that standard heat enthalpy of CH_(4), C_(2)H_(4) and C_(3)H_(8) are -17.9, 12.5, -24.8 Kcal/mol. The Delta H for CH_(4)+C_(2)Hrarr C_(3)H_(8) is :

C_8H_8O + CH_3CH_2MgBr to (A) overset(Lucas reag ent)to(B) Instant turbidity . Identify product B.

10 mL of a mixture of CH_(4) and C_(3)H_(8) requires 41 mL of oxygen for complete combustion. What is the volume of CH_(4) and C_(3)H_(8) in. the mixture.

A solution is 1M in CH_(3)COONa . and 0.1M in CH_(3)COOH . if pK_(a) of CH_(3)COOH is 4.8 , what is the pH of the solution?