Kiruvchilar uchun kimyo fanidan

10. Kristalgidrat tarkibidagi “n” qiymatini topish.

1. Taxir tuz deb ataluvchi MgSO₄ ^. n H₂O modda tarkibida S - 13% bo’lsa, “n” qiymatini toping.

A) 5 B) 6 C) 7 D) 8
2. Bura deb ataluvchi Na₂B₄O₇ ^. n H₂O modda tarkibida Na-12.04% bo’lsa, “n” qiymatini toping.
A) 12 B) 8 C) 10 D) 11
3. Pretsipitat deb ataluvchi CaHPO₄ ^. n H₂O modda tarkibida P-18.02% bo’lsa, “n” qiymatini toping.
A) 1 B) 2 C) 3 D) 4
4. Mis kuporosi deb ataluvchi CuSO₄ ^. n H₂O modda tarkibida S-12.8% bo’lsa, “n” qiymatini toping.
A) 6 B) 5 C) 4 D) 8
5. Kristall soda deb ataluvchi Na₂CO₃ ^. n H₂O modda tarkibida Na va C massa ulushi 20.28% bo’lsa, “n” qiymatini toping.
A) 10 B) 9 C) 11 D) 5
6. Gips deb ataluvchi CaSO₄ ^. n H₂O modda tarkibida Ca-23.25% bo’lsa, “n” qiymatini toping.
A) 2 B) 0,5 C) 1 D) 5
7. Albaster deb ataluvchi CaSO₄ ^. n H₂O modda tarkibida S va Ca massa ulushi 42.76% bo’lsa, “n” qiymatini toping.
A) 0,5 B) 1 C) 5 D) 2
8. MnSO₄ ^. n H₂O modda tarkibida S-14.35% bo’lsa, “n” qiymatini toping.
A) 1 B) 2 C) 3 D) 4
9. Temir kuporosi deb ataluvchi FeSO₄ ^. n H₂O modda tarkibida Fe va S ning massa ulushi 31.65 % bo’lsa, “n” qiymatini toping.
A) 5 B) 6 C) 8 D) 7
10. Al(NO₃)₃ ^. n H₂O modda tarkibida N-15.73% bo’lsa, “n” qiymatini toping.
A) 1 B) 2 C) 3 D) 4

11. Kristalgidrat tarkibidagi “n” topish (2 xil usulda).

1. Na₂HPO₄ ^. n H₂O kristalgidrat tarkibida H ning massa ulushi H-3.57 % teng bo’lsa “n” qiymatini toping.

A) 2 B) 4 C) 3 D) 5
2. CaHPO₄ ^. n H₂O kristalgidrat tarkibida H ning massa ulushi H-2.9 % teng bo’lsa “n” qiymatini toping.
A) 1 B) 2 C) 3 D) 4
3. Na₂CO₃ ^. nH₂O kristalgidrat tarkibida O ning massa ulushi O – 72.7 % teng bo’lsa “n” qiymatini toping.
A) 9 B) 10 C) 8 D) 11
4. CaSO₄ ^. nH₂O kristalgidrat tarkibida O ning massa ulushi O-58.9% teng bo’lsa “n” qiymatini toping.
A) 2 B) 3 C) 4 D) 5
5. Fe₂(SO₄)₃ ^. n H₂O kristalgidrat tarkibida O ning massa ulushi O-57.79% teng bo’lsa “n” qiymatini toping.
A) 3 B) 4 C) 2 D) 5
6. Al(NO₃)₃ ^. nH₂O kristalgidrat tarkibida O ning massa ulushi O-72.98% teng bo’lsa “n” qiymatini toping.
A) 3 B) 4 C) 5 D) 6
7. KH₂PO₄ ^. nH₂O kristalgidrat tarkibida H ning massa ulushi H-3.49% teng bo’lsa “n” qiymatini toping.
A) 2 B) 3 C) 4 D) 5
8. Na₂B₄O₇ ^. nH₂O kristalgidrat tarkibida O ning massa ulushi O-72.7% teng bo’lsa “n” qiymatini toping.
A) 9 B) 10 C) 11 D) 12
9. MgHPO₄ ^. nH₂O kristalgidrat tarkibida H ning massa ulushi H- 4.02% teng bo’lsa “n” qiymatini toping.
A) 2 B) 3 C) 4 D) 5
10. Na₂SO₄ ^. nH₂O kristalgidrat tarkibida O ning massa ulushi O - 67.13% teng bo’lsa “n” qiymatini toping
A) 8 B) 9 C) 10 D) 11