27. Temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashmaga oid.
1. Mol nisbati 1:2:1 bo`lgan 4 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 82% li sulfat kislotaning massasini hisoblab toping. Reaksiya natijasida hosil bo`lgan gazning hajmini (n.sh) aniqlang .
A) 7,17 ; 1,344 litr B) 11,95; 0,896 litr
C) 14,34 ; 1,232 litr D) 15,95; 1,568 litr
2. Mol nisbati 1:2:3 bo`lgan 6,88 g temir (II,III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 54% li nitrat kislotaning massasini hisoblang. Reaksiya hosil bo`lgan gazning hajmini (n.sh) aniqlang.
A) 13,34 ; 4,48 litr B) 23,82; 1,12 litr
C) 32,6 ; 2,24 litr D) 39,67 ; 3,136 litr
3. Mol nisbati 2:5:3 bo`lgan 14,32 g temir (II,III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 84% li sulfat kislotaning massasini hisoblang. Reaksiya natijasida hosil bo`lgan gazning hajmini(n.sh) aniqlang.
A) 52,63 ; 3,36 litr B) 33,83; 6,72 litr
C) 56,84 ; 1,98 litr D) 42,29; 13,44 litr
4. Mol nisbati 1: 1 : 2 bo`lgan 7,448 g temir (II,III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 48,3% li nitrat kislotaning massasini hisoblang. Reaksiya natijasida hosil bo`lgan gazning hajmini(n.sh) aniqlang.
A) 19,11 ; 3,2928 litr B) 43,83 ; 2,5088 litr
C) 25,52 ; 4,3804 litr D) 11,466; 4,3904litr
5. Mol nisbati 1:4:2 bo`lgan 14,2 g temir (II,III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 74,48% li sulfat kislotaning massasini hisoblang. Reaksiya natijasida hosil bo`lgan gazning hajmini(n.sh) aniqlang.
A) 125 ; 24,552 litr B) 275; 22,624 litr
C) 52,63 ; 4,48 litr D) 150; 22,552 litr
6. Mol nisbati 3:1:2 bo`lgan 21,414 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashmani eritish uchun 45% li nitrat kislotaning massasini hisoblang. Reaksiya natijasida hosil bo`lgan hajmini(n.sh) aniqlang.
A) 52,5 ; 1,232 litr B) 53,57; 2,2 litr
C) 47,5 ; 3,696 litr D) 120,4 ; 3,8528 litr
7. Mol nisbati 1:2:1 bo`lgan 14 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashma yetarli miqdorda sulfat kislota eritmasida eritildi. Agar kislota eritmasida kislota atomlar sonining suv atomlar soniga nisbati 1:1,387 bo`lsa, shu eritmadan necha gramm sarflanadi.
A)54,68 gr B) 112 gr C) 125 gr D) 127,5 gr
8. Mol nisbati 1:2:3 bo`lgan 82,56 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashma yetarli miqdorda nitrat kislotada eritildi. Agar sarflangan nitrat kislotadagi pOH qiymati 13,7 ga teng bo`lsa, dastlabki eritmaning hajmini (l) toping.
A) 1,568 litr B) 4,08 litr C)8,16 litr D) 1,344 litr
9. Mol nisbatlari 1:2:4 bo`lgan 58,24 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashma yetarli miqdorda sulfat kislota eritmasida eritildi. Reaksiya natijasida hosil bo`lgan suvning atomlar soni dastlabki sulfat kislota eritmasi tarkibidagi suvning atomlari soniga teng bo`lsa, sarflangan sulfat kislota eritmasini konsentratsiyasini toping.
A) 21,12% B) 63,36% C) 42,24% D) 87,9 %
10. Mol nisbatlari 2:1:2 bo`lgan 45,84 g temir (II, III) oksidi, uglerod va mis (I) oksididan iborat aralashma yetarli miqdorda sulfat kislota eritmasida eritildi. Agar eritma konsentratsiyasi 82,32% li bo`lsa, eritma massasini toping.
A) 57,5 gr B) 100 g C) 75 gr D) 50 gr
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