RBTS PAPER 3(CHEMISTRY)
3 RBTS PAPER

162649 Which of the following values of heat of formation indicates that the product is least stable

1 \(-94 \mathrm{kCal}\)
2 \(-231.6 \mathrm{kCal}\)
3 \(+21.4 \mathrm{kCal}\)
4 \(+64.8 \mathrm{kCal}\)
3 RBTS PAPER

162650 For the reactions,
(i) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})+\mathrm{x} \mathrm{kJ}\)
(ii) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\ell)+\mathrm{y} \mathrm{kJ}\)
Which one of the following statement is correct :

1 \(x>y\)
2 \(x
3 \(x=y\)
4 More data required
3 RBTS PAPER

162651 The enthalpy of formation of ammonia is \(-46.0 \mathrm{~kJ}\) \(\mathrm{mol}^{-1}\). The enthalpy change for the reaction \(2 \mathrm{NH}_3(\mathrm{~g}) \rightarrow \mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g})\) is :

1 \(46.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
2 \(92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 \(-23.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
4 \(-92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 RBTS PAPER

162652 If \(\Delta \mathbf{G}^{\circ}\) is zero for a reaction then :

1 \(\Delta \mathrm{H}=0\)
2 \(\Delta S=0\)
3 \(\mathrm{K}_{\text {eq. }}=0\)
4 \(\mathrm{K}_{\text {eq. }}=1\)
3 RBTS PAPER

162649 Which of the following values of heat of formation indicates that the product is least stable

1 \(-94 \mathrm{kCal}\)
2 \(-231.6 \mathrm{kCal}\)
3 \(+21.4 \mathrm{kCal}\)
4 \(+64.8 \mathrm{kCal}\)
3 RBTS PAPER

162650 For the reactions,
(i) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})+\mathrm{x} \mathrm{kJ}\)
(ii) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\ell)+\mathrm{y} \mathrm{kJ}\)
Which one of the following statement is correct :

1 \(x>y\)
2 \(x
3 \(x=y\)
4 More data required
3 RBTS PAPER

162651 The enthalpy of formation of ammonia is \(-46.0 \mathrm{~kJ}\) \(\mathrm{mol}^{-1}\). The enthalpy change for the reaction \(2 \mathrm{NH}_3(\mathrm{~g}) \rightarrow \mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g})\) is :

1 \(46.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
2 \(92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 \(-23.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
4 \(-92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 RBTS PAPER

162652 If \(\Delta \mathbf{G}^{\circ}\) is zero for a reaction then :

1 \(\Delta \mathrm{H}=0\)
2 \(\Delta S=0\)
3 \(\mathrm{K}_{\text {eq. }}=0\)
4 \(\mathrm{K}_{\text {eq. }}=1\)
3 RBTS PAPER

162649 Which of the following values of heat of formation indicates that the product is least stable

1 \(-94 \mathrm{kCal}\)
2 \(-231.6 \mathrm{kCal}\)
3 \(+21.4 \mathrm{kCal}\)
4 \(+64.8 \mathrm{kCal}\)
3 RBTS PAPER

162650 For the reactions,
(i) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})+\mathrm{x} \mathrm{kJ}\)
(ii) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\ell)+\mathrm{y} \mathrm{kJ}\)
Which one of the following statement is correct :

1 \(x>y\)
2 \(x
3 \(x=y\)
4 More data required
3 RBTS PAPER

162651 The enthalpy of formation of ammonia is \(-46.0 \mathrm{~kJ}\) \(\mathrm{mol}^{-1}\). The enthalpy change for the reaction \(2 \mathrm{NH}_3(\mathrm{~g}) \rightarrow \mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g})\) is :

1 \(46.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
2 \(92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 \(-23.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
4 \(-92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 RBTS PAPER

162652 If \(\Delta \mathbf{G}^{\circ}\) is zero for a reaction then :

1 \(\Delta \mathrm{H}=0\)
2 \(\Delta S=0\)
3 \(\mathrm{K}_{\text {eq. }}=0\)
4 \(\mathrm{K}_{\text {eq. }}=1\)
3 RBTS PAPER

162649 Which of the following values of heat of formation indicates that the product is least stable

1 \(-94 \mathrm{kCal}\)
2 \(-231.6 \mathrm{kCal}\)
3 \(+21.4 \mathrm{kCal}\)
4 \(+64.8 \mathrm{kCal}\)
3 RBTS PAPER

162650 For the reactions,
(i) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\mathrm{g})+\mathrm{x} \mathrm{kJ}\)
(ii) \(\mathrm{H}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HCl}(\ell)+\mathrm{y} \mathrm{kJ}\)
Which one of the following statement is correct :

1 \(x>y\)
2 \(x
3 \(x=y\)
4 More data required
3 RBTS PAPER

162651 The enthalpy of formation of ammonia is \(-46.0 \mathrm{~kJ}\) \(\mathrm{mol}^{-1}\). The enthalpy change for the reaction \(2 \mathrm{NH}_3(\mathrm{~g}) \rightarrow \mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g})\) is :

1 \(46.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
2 \(92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 \(-23.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
4 \(-92.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\)
3 RBTS PAPER

162652 If \(\Delta \mathbf{G}^{\circ}\) is zero for a reaction then :

1 \(\Delta \mathrm{H}=0\)
2 \(\Delta S=0\)
3 \(\mathrm{K}_{\text {eq. }}=0\)
4 \(\mathrm{K}_{\text {eq. }}=1\)